Catholic Church

The Catholic Church is the largest Christian church and the largest single religious body in the world, with a membership of roughly 1.4 billion baptized people. It is a worldwide community that understands itself as the continuing body of Christ, governed under the pope, who is the bishop of Rome, and organized into dioceses led by bishops and parishes led by priests. The Church is one of the Christian traditions, alongside the Eastern Orthodox and Protestant churches, and it has shaped Western law, philosophy, literature, music, and architecture for nearly two thousand years.

Its identity rests on a set of doctrines about God, Christ, salvation, and the sacraments; on the authority of Scripture and Sacred Tradition; and on the teaching office of the bishops in union with the pope. Its public life is equally important. Through its schools, universities, hospitals, charities, and diplomacy, it has a far-reaching role in education, health care, and social policy. The Church also has a long and contested history of relations with political power, with rival Christian churches, with other religions, and with science, all of which are part of its story.

This entry describes the Church's self-understanding and doctrinal foundations, its sacramental life and governance, its clergy and religious orders, and its historical development from early Christianity through the medieval period, the Reformation, global mission, the modern era, and the Second Vatican Council. It then surveys the Church's social teaching, its institutions of learning, care, and culture, its relationship with science, its ecumenical and interreligious efforts, its present demographic and organizational situation, and the disputes and open questions it faces today.

Name and Self-Understanding

The meaning of "catholic"

The word catholic comes from the Greek katholikos, meaning "universal" or "concerning the whole." Early Christian writers used it to describe the church spread across the known world. Ignatius of Antioch, writing around 110, is usually cited as the earliest witness to the phrase "catholic church," which he used for the whole community of believers, in contrast to local congregations. The Catholic Church understands itself as the one church that Jesus Christ founded and entrusted to the apostles and their successors. The Second Vatican Council's constitution Lumen gentium (1964) says that this one church of Christ "subsists in" the Catholic Church. The wording means that the Catholic Church holds the fullness of the means of salvation, while other Christian communities also contain real elements of holiness. This phrase has been a central point of debate in ecumenical discussions.

Body of Christ and People of God

The Church describes itself with two main images. The first is the Body of Christ, drawn from Paul's letters, which stresses that the members are united to Christ as their head and to one another. The second is the People of God, which draws on the biblical history of Israel and emphasizes the shared dignity of all the baptized. Lumen gentium uses both images together.

Baptism is the entry point to membership. The Code of Canon Law of 1983 (canon 849) describes baptism as the gateway to the other sacraments, and it is ordinarily administered to infants as well as adults. Baptism confers an indelible mark and is never repeated. Baptized persons are incorporated into the Church, but the code states that full communion also requires a profession of faith, the sacraments, and submission to the church's governance under the pope and the bishops (canon 205). For this reason, baptism is the basic threshold of membership, while full participation depends on these further conditions.

Latin rite and Eastern Catholic churches

Most Catholics belong to the Latin (Western) rite, which uses the Roman liturgy in its typical forms and is governed by the Latin Code of Canon Law. Alongside it stand the Eastern Catholic Churches, which are 23 sui iuris churches (self-governing churches). They use liturgical traditions derived from Byzantine, Alexandrian, Antiochene, Armenian, and East Syriac sources. Each has its own hierarchy, which may include patriarchs or major archbishops, and each is governed in part by the Code of Canons of the Eastern Churches of 1990. Their membership and their rite are distinct from the Latin rite, but they are in full communion with the Bishop of Rome. They should not be confused with the Eastern Orthodox churches, which separated from Rome in the Great Schism of 1054 and do not share full communion with the pope.

Sovereignty and international status

The Holy See and Vatican City State are closely linked but legally distinct. Vatican City is a small enclave of about 0.44 km² in Rome, created by the Lateran Treaty of 11 February 1929 between the Holy See and the Kingdom of Italy. The sovereignty under international law, however, belongs to the Holy See, which existed as a sovereign entity during the centuries of the Papal States and which continued after their loss in 1870. Through the Holy See, the Church maintains diplomatic relations with more than 180 states, appoints papal nuncios, and concludes concordats and other treaties. Since 1964 the Holy See has held permanent observer status at the United Nations, a status that does not make it a member state with a vote. This combination of sovereign statehood and religious authority places the Holy See in an unusual position: it is a sovereign subject in international law, yet it is not a conventional nation-state and its authority over the worldwide Catholic community does not depend on territory.

Doctrinal Foundations: Scripture, Tradition, and the Magisterium

Scripture and the canon

The Catholic Bible contains 73 books: 46 books in the Old Testament and 27 books in the New Testament. The Old Testament difference from Protestant Bibles lies in seven books (Tobit, Judith, Wisdom, Sirach, Baruch, and 1 and 2 Maccabees) plus expanded portions of Esther and Daniel. Catholics call these "deuterocanonical" books because their canonical status was settled later than that of books such as Genesis or Isaiah. They are not found in the Hebrew Bible, which is why Judaism does not count them as Scripture. Martin Luther placed them in an apocryphal section of his Old Testament, and most Protestant Bibles followed that arrangement.

Catholic apologists argue that the list was settled much earlier. They point to the Council of Rome in 382 under Pope Damasus, followed by regional councils at Hippo (393) and Carthage (397, 419). Critics counter that the canon was not firmly fixed until Trent. The Council of Trent's 1546 decree affirmed the list and issued an anathema on those who rejected the books affirmed there. Historians differ on whether Trent merely reaffirmed an older consensus or settled a question that remained open; the Catholic position is the former.

Sacred Tradition and the Magisterium

Catholic teaching holds that God's revelation is transmitted through two channels: Scripture and Sacred Tradition. Tradition here means the living handing-down of the apostolic faith through the Church's liturgy, creeds, writings of the Fathers, and practice, not a collection of extra texts. Trent treated Scripture and tradition as received with equal reverence, and the Second Vatican Council's Dei Verbum (1965) later described both as flowing from one divine source and forming a single deposit of faith.

Authority to interpret this deposit belongs to the Magisterium, the teaching office exercised by the pope together with the bishops in communion with him. The Magisterium is understood to serve the Word rather than stand above it. Catholic theology also recognizes the sensus fidelium, the sense of the faithful, as a way the Holy Spirit guides the whole body of believers to receive authentic dogma.

Creeds and dogmas

The Nicene Creed was formulated at the Council of Nicaea in 325 and expanded at Constantinople in 381. It affirms that the Son is of the same substance (homoousios) as the Father. The doctrine of the Trinity holds that there is one God in three persons, Father, Son, and Holy Spirit. The Council of Chalcedon (451) defined the Incarnation: Christ is one divine person with two natures, divine and human, without confusion or division. The Western addition of the filioque ("and the Son") to the creed remains a point of dispute with the Eastern Orthodox churches.

The Immaculate Conception is a dogma of a different kind. In the Constitution "Ineffabilis Deus" of December 8, 1854, Pius IX pronounced and defined that Mary was preserved from original sin from the first moment of her conception, in view of the merits of Christ. Before issuing it, the pope had circulated a 1849 encyclical, Ubi primum, asking bishops across the world about popular devotion to the doctrine. The dogma is often confused with the Virgin Birth, which concerns Jesus rather than Mary's own conception. It is the first ex-cathedra statement of papal infallibility after the definition of 1870, and the Assumption was defined in the same manner in 1950.

Development of doctrine

Catholic theology holds that doctrine can develop without changing in substance: the Church's understanding of revealed truths deepens over time. John Henry Newman's An Essay on the Development of Christian Doctrine (1845) became the classic statement of this view. Critics, including many Eastern Orthodox theologians and some Protestant historians, argue that doctrines such as the Immaculate Conception and papal primacy are later innovations rather than developments of the apostolic faith. The debate turns largely on how one defines continuity.

Papal infallibility and its limits

The First Vatican Council (1869–1870) addressed papal authority in its constitution Pastor aeternus. The constitution declared that when the pope speaks in discharge of the office of pastor and doctor of all Christians, defining a doctrine of faith or morals to be held by the universal Church, he possesses the infallibility with which Christ willed his Church to be endowed. Such definitions are therefore irreformable in themselves, not because of the Church's later consent. The first vote on the chapter in July 1870 recorded 451 affirmative, 62 conditional, and 88 negative votes. The final vote on 18 July 1870 was overwhelmingly positive, and some bishops who opposed the definition left Rome before the vote.

The doctrine is narrower than it is often portrayed. It applies only to ex cathedra statements, which require that the pope speak in his capacity as shepherd and teacher of all Christians, define a matter of faith or morals, and intend that it be held by the whole Church. Infallibility does not mean that the pope is personally sinless, nor that every papal statement is infallible. It does not extend to ecclesiastical administration and discipline, and the pope is bound to act in accord with revelation and earlier definitions. Since 1870 it has been used only once, for the 1950 definition of the Assumption, and some theologians consider the 1854 Immaculate Conception definition to be ex cathedra as well.

Sacraments and Liturgy

The seven sacraments

The Catholic Church recognizes seven sacraments: Baptism, Confirmation (or Chrismation), the Eucharist, Penance, the Anointing of the Sick, Holy Orders, and Matrimony. The Catechism of the Catholic Church defines them as efficacious signs of grace, instituted by Christ and entrusted to the Church, through which divine life is given to believers. Each sacrament is a visible act that the Church holds to communicate what it signifies, so that the rite is not merely a symbol of inner faith.

The seven are often grouped by function. Baptism, Confirmation, and the Eucharist are the sacraments of initiation that establish a person's life in Christ. Penance and the Anointing of the Sick heal sin and sickness. Holy Orders and Matrimony are oriented toward service to the community: one through ordained ministry, the other through the marital bond. Baptism, Confirmation, and Holy Orders are received only once, because they imprint a lasting spiritual character. Baptism is normally administered to infants in the Latin Church, and the Eastern Catholic churches generally administer Chrismation and the Eucharist together with it.

The number seven became a fixed doctrine gradually. Peter Lombard's theology of the twelfth century systematized the list, and the Fourth Lateran Council (1215) affirmed it. The Council of Trent, meeting in its seventh session in 1547, defined the sacraments of the New Law as instituted by Christ and neither more nor fewer than seven, in response to Protestant critiques.

The Mass and the Eucharist

The Eucharist, also called the Mass, is the center of Catholic worship. The Church teaches that the whole liturgical life revolves around the Eucharistic sacrifice. In the Mass, the priest recites the words of Christ at the Last Supper over bread and wine, and the Church holds that these elements become the body and blood of Christ while retaining their outward appearance. This change is called transubstantiation. The term was used at the Fourth Lateran Council in 1215, and the Council of Trent (1551) affirmed the doctrine of the real presence in response to the Reformers, who held differing views on the Eucharist. Catholics consider the Mass both a memorial of Christ's sacrifice and the means by which the faithful participate in it. Receiving Communion is normally reserved to baptized Catholics who are in a state of grace, and the Eucharist is also reserved in tabernacles and carried to the sick as viaticum.

The liturgical year and devotions

The Church organizes the year around the life of Christ. Advent, the four weeks before Christmas, is a season of preparation. Christmas is followed by a time of celebration, and Lent, a forty-day penitential season beginning on Ash Wednesday, leads to the Easter Triduum, the three days from Holy Thursday evening to Easter Sunday. Easter is the central feast of the year, followed by Pentecost. The remaining weeks form Ordinary Time. Alongside this temporal cycle runs the sanctoral cycle of feasts for saints, such as those of the apostles, martyrs, and the Virgin Mary.

Popular devotions supplement the official liturgy. The Rosary, a sequence of prayers that meditates on events in the lives of Christ and Mary, was given a formal feast of Our Lady of the Rosary, a devotion that Pope Pius V added to the calendar. Other practices include Eucharistic adoration, the Stations of the Cross during Lent, and novenas. These are optional and differ from the sacraments and the Mass, which are required for certain obligations.

The Roman Rite, the Tridentine Mass, and the Missal of 1970

The Roman Rite is the Latin liturgical tradition that developed in Rome and spread through the Western Church. Following a decision of the Council of Trent, Pope Pius V promulgated the Roman Missal of 1570, which became mandatory across most of the Western Church. Because the council was held in Trent, this form is known as the Tridentine Mass. It remained the most widely celebrated Mass until the 1960s, and it was revised several times before its typical edition of 1962.

After the Second Vatican Council, Pope Paul VI promulgated a revised Roman Missal in 1969, which appeared in 1970 with a General Instruction. This Mass, in its vernacular and Latin forms, is now the ordinary form of the Roman Rite. Later editions, including 1975 and 2002, have followed. In 2007 Pope Benedict XVI's Summorum Pontificum allowed wider use of the 1962 Missal as an extraordinary form. In 2021 Pope Francis's Traditionis custodes restricted that use, requiring bishops to authorize it, and in December 2021 the Vatican issued further guidelines. Reports from late 2025 indicated that Pope Leo XIV would not abrogate these restrictions, though bishops could request two-year dispensations.

Eastern liturgical traditions

The Eastern Catholic churches celebrate the sacraments according to their own liturgical traditions, which include the Byzantine, Alexandrian, Antiochene, Armenian, and East Syriac families. Their Divine Liturgies, such as those attributed to John Chrysostom and Basil of Caesarea, differ in language, chant, and ritual from the Latin Mass, though they share the same sacramental theology. Eastern Catholic clergy, unlike Latin-rite priests, may be married under certain conditions, and the Eastern churches maintain their own practices of initiation.

The Papacy and the Roman Curia

The pope and Petrine primacy

The bishop of Rome is the pope, and Catholic teaching presents him as head of the universal Church. The claim rests on the New Testament account in which Jesus names Peter as the rock on which he will build his community and gives him the "keys" of the kingdom (Matthew 16:18–19). Catholic tradition adds that Peter died and was buried in Rome, which made the Roman church a natural center of authority. From the second century, Roman bishops were increasingly treated as leaders among the bishops of the wider Church, a development that later theology described as Petrine primacy. The First Vatican Council (1870) later defined the pope's universal jurisdiction, a matter treated in the section on the modern Church. Within the Latin Church, the pope exercises ordinary, supreme and immediate authority over all the faithful, while Eastern Catholic churches retain their own patriarchs and synods.

Election by conclave

When a pope dies or resigns, the College of Cardinals meets in conclave in the Sistine Chapel. Under current norms, only cardinals under the age of 80 may vote, and a candidate must win a two-thirds majority. The 2025 conclave illustrates the process. The conclave that named Leo the new pope began May 7 and concluded May 8. He was elected pope after four ballots, compared to the five ballots it took to elect his predecessor, the late Pope Francis, in 2013.

The new pope, Robert Francis Prevost, was born in Chicago in 1955. He is the first U.S. pope in the church's history, and is also a citizen of Peru, where he worked for many years. He is a low-key Augustinian friar who had spent much of his ministry as a missionary and bishop in Peru before heading the Dicastery for Bishops in Rome. On the second day of the conclave, Cardinal Robert Prevost was elected as the first-ever American pope. He took the name Leo XIV, and he is the 267th pope in the Catholic count.

The Roman Curia

The Roman Curia is the administration that assists the pope in governing the Church. Its current framework comes from the apostolic constitution Praedicate evangelium, promulgated by Pope Francis on 19 March 2022, which replaces Pastor bonus, the apostolic constitution on the Roman Curia promulgated by Pope John Paul II on June 28, 1988. The reform took effect on 5 June 2022. The text describes the Curia as made up of the Secretariat of State, the dicasteries and the offices, all of which are legally equal.

The Secretariat of State is the most senior body. Its substitute and secretary of state coordinate the Curia's general affairs and, through the section for relations with states, the Holy See's diplomacy. The dicasteries are the departments that replaced the older congregations and pontifical councils; all the Vatican's main departments are now known as "dicasteries." Among the most important are the Dicastery for the Doctrine of the Faith, which succeeded the Congregation for the Doctrine of the Faith and oversees doctrinal questions; the Dicastery for Bishops, which handles the appointment and oversight of bishops; the Dicastery for Divine Worship and the Discipline of the Sacraments, which regulates liturgy; and the Dicastery for Evangelization, which handles mission work. The reform merged the former Congregation for the Evangelization of Peoples with the Pontifical Council for the New Evangelization, and the new body is presided over directly by the pope. A separate Dicastery for the Service of Charity emerged from the papal almonry, and the constitution also states that "any member of the faithful" can lead one of newly constituted Vatican dicasteries or other bodies, which opened leadership posts to laypeople for the first time.

Vatican City and the Holy See

The Holy See and Vatican City State are related but distinct. The Holy See is the central government of the Catholic Church and the legal subject of international law, while Vatican City is the small territory that gives it a physical base. The State of the Vatican City was created in 1929 to provide a territorial identity for the Holy See in Rome, and it is a recognized national territory under international law. The Holy See, however, enters into international agreements and receives and sends diplomatic representatives. Vatican City covers less than half a square kilometre, making it the smallest sovereign state, and the pope holds executive, legislative and judicial authority within it.

In diplomacy, the Holy See acts as a sovereign subject without being a conventional state. The Secretariat of State manages diplomatic relations, including establishing concordats, or treaties, with other states and representing the Holy See in international organizations. Papal diplomats, known as nuncios, represent the Holy See abroad and also monitor the local Catholic Church. The Holy See has formal diplomatic relations with almost all states of the world and with international organizations including the United Nations, where it holds Permanent Observer status. Its network is usually described as covering roughly 180 states, along with the European Union and the Sovereign Military Order of Malta. The Holy See is not a member of the UN, but its observer status gives it a voice in multilateral debates on peace, human rights and development.

Bishops, Dioceses, and Eastern Catholic Churches

The basic unit of Catholic local government is the diocese, a territory entrusted to the pastoral care of a bishop. Dioceses are usually grouped into ecclesiastical provinces, each headed by a metropolitan archbishop, whose see serves as the province's seat; the remaining dioceses in that province are called suffragan. Some archdioceses sit outside any province and answer directly to the Holy See. Counting every type of jurisdiction, including apostolic vicariates, military ordinariates and personal ordinariates, the Church listed about 3,172 ecclesiastical jurisdictions as of June 2024. Published totals differ by source and by how titular and missionary sees are counted. Each diocese is divided into parishes, each entrusted to a parish priest, and the parish is where most Catholics meet the Church in daily life.

Under the 1983 Code of Canon Law, the diocesan bishop governs with the help of several standing bodies. A presbyteral council of priests advises him, and in certain matters its consent is required. A college of consultors, a small group of priests, has particular responsibilities, such as choosing a diocesan administrator when the see falls vacant. A finance council oversees diocesan economic affairs, and a pastoral council, which may include laity, is advisory in character. A bishop may also convene a diocesan synod, which is a different body from the Synod of Bishops in Rome. Bishops receive their office through sacramental ordination and canonical appointment by the pope, and they are part of the wider college of bishops, whose head is the pope.

National and regional coordination happens through episcopal conferences. Canon law describes a conference as a permanent assembly of the bishops of a given nation or territory, which jointly exercise certain pastoral functions. Conferences issue common guidelines on liturgy, catechesis, and social questions, and they represent the Church in dealings with governments, although a conference's general decrees generally need a two-thirds vote of its members and recognition from the Holy See before they bind. Examples include the United States Conference of Catholic Bishops and the Italian Episcopal Conference. The Synod of Bishops, created by Pope Paul VI in 1965, is a different kind of body: a standing group of bishops chosen from around the world that advises the pope. It meets in ordinary, extraordinary, or special assemblies, which are prepared by a general secretariat in Rome. Its conclusions are usually advisory, and the pope decides whether they carry binding force.

The Catholic Church is not a single uniform structure. Alongside the Latin Church, which is by far the largest, there are 23 Eastern Catholic churches that are sui iuris, meaning self-governing particular churches within the Church, each with its own hierarchy and recognized autonomy. The Code of Canons of the Eastern Churches, promulgated by John Paul II in 1990 and in force from 1991, codifies their law in common, while each church keeps its own particular norms and liturgical books. Their rites trace their origins to the Alexandrian, Antiochene, Armenian, Chaldean and Constantinopolitan (Byzantine) traditions. The largest include the Ukrainian Greek Catholic Church, whose origins lie in the Union of Brest in 1596 and whose major archbishop sits in Kyiv, and the Syro-Malabar Church of India, which traces its roots to the community associated with Thomas the Apostle. The Maronite Church, with its patriarch in Lebanon, is traditionally dated to a return to communion with Rome in the twelfth century. The Eastern Catholic churches together number roughly 18 million members, a small fraction of the Church as a whole.

Eastern Catholic governance follows a graded hierarchy. Patriarchal churches, such as the Maronite and Coptic churches, are led by a patriarch and governed by a synod of bishops that holds the highest degree of autonomy in its territory. Major archiepiscopal churches, such as the Syro-Malabar and Ukrainian Greek Catholic churches, are led by a major archbishop with a comparable synod. Metropolitan churches are governed by a metropolitan together with a council of hierarchs, and other sui iuris churches are led by their bishops under the authority of the Apostolic See. Eastern dioceses are called eparchies, and churches in diaspora often organize through exarchates. Most Eastern Catholic churches ordain married men as priests, while bishops are chosen from the celibate clergy.

Eastern Catholic churches share with the Eastern Orthodox churches a Byzantine, Syriac, or Alexandrian liturgical heritage, similar spiritual practices, and a theology that differs in emphasis from Latin scholasticism. They differ from Orthodoxy in accepting papal primacy. The Orthodox churches, which separated from Rome after the Great Schism of 1054, are organized into autocephalous churches with no single head. The Eastern Catholic churches were formed mostly through unions with Rome between the sixteenth and eighteenth centuries, and many Orthodox Christians regard these unions as a betrayal, often using the term "Uniatism." Such tensions were sharpest in Ukraine and in parts of the Middle East. The Second Vatican Council's decree Orientalium Ecclesiarum (1964) affirmed the dignity and rights of the Eastern churches and encouraged them to preserve their traditions. The principle of unity with Rome has therefore been interpreted as shared communion under the pope rather than uniformity of practice: each Eastern church keeps its own rite, discipline and governance, while accepting the pope as the guarantor of unity. This balance remains a central question in Catholic–Orthodox relations.

Clergy and Religious Life

Ordained ministry and celibacy

The Catholic clergy are ordained through the sacrament of holy orders, which has three degrees: deacon, priest and bishop. Deacons may serve permanently or as a step toward priesthood, and in the Latin Church the rule is that canon law admits only celibate men to the priesthood as a general practice. The Ordinary of a diocese, in line with the Latin discipline, normally accepts only celibate candidates for the presbyterate, and unmarried candidates take a vow of celibacy before ordination. Celibacy is therefore a disciplinary rule rather than a doctrinal requirement, and it has exceptions.

The most significant exceptions concern the Eastern Catholic churches, which generally permit married men to be ordained as priests, while bishops are drawn from the unmarried clergy. Married men are also ordained in the Latin Church under specific arrangements for former Anglicans. The Pastoral Provision of 1980 allowed parishes celebrating the liturgy in an approved form of the Anglican tradition and with a married clergy composed of former Anglican priests in the United States. Benedict XVI's apostolic constitution Anglicanorum coetibus, issued in November 2009, authorized the creation of "ordinariates," which are regionally based structures similar to dioceses. Under its norms, those who ministered as Anglican deacons, priests, or bishops may be accepted by the Ordinary as candidates for Holy Orders, but the Pope may grant, case by case, permission for married men to be admitted to the order of presbyter. The first ordinariate, Our Lady of Walsingham, was established for England and Wales on January 15, 2011, and it is led by Monsignor Keith Newton, a former Anglican bishop who is married and was ordained a Catholic priest.

Religious orders and their vows

Alongside the diocesan clergy, religious orders and congregations are communities whose members live under a rule and take public vows. Their members traditionally take vows of poverty, chastity and obedience, although the ways these are lived vary. Monastic orders, such as the Benedictines, follow the Rule of St Benedict, written in the early sixth century, and are organized into autonomous houses that stress prayer, manual labour and stability in one community. Mendicant orders such as the Franciscans and Dominicans, approved in the early thirteenth century, depended on begging and urban preaching and soon became prominent in the new universities of Europe. Clerical orders such as the Jesuits, founded by Ignatius of Loyola and approved in 1540, were organized for mobile apostolic service, including teaching, missions and pastoral work across national borders.

Founding of major orders and their work

Religious orders have shaped the Church's missionary, educational and intellectual life. Benedictine monasteries preserved and copied manuscripts, managed estates and ran schools, and many of Europe's early cathedral and monastic schools grew from these houses. The Dominicans and Franciscans contributed to the scholastic theology of the thirteenth century, and their members held chairs at Paris and Oxford. The Jesuits founded colleges across Europe and the mission fields, and they established a standardized system of study, the Ratio Studiorum, in 1599. Jesuit missionaries worked in India, Japan and China, and their scientific and linguistic work often went alongside their evangelization. Women's congregations, including the Ursulines and the Sisters of Charity, took up education, nursing and care for the poor, and they founded hospitals and schools in Europe and in mission territories.

Lay ministries, catechists and movements

In recent decades the Church has expanded formal roles for the laity, which rests on the shared baptismal priesthood of all believers. In January 2021, Spiritus Domini amended canon 230 §1 of the Code of Canon Law to allow women access to the instituted ministries of lector and acolyte, and Antiquum ministerium in May 2021 instituted the ministry of catechist. Lector and acolyte had once been considered "minor orders" in the tradition of the Church and were changed to ministries by Pope Paul VI. The catechist ministry is described as a stable form of service rendered to the local Church in accordance with pastoral needs identified by the local Ordinary, yet one carried out as a work of the laity. The pope stressed that this service should be carried out in a fully secular manner, avoiding any form of clericalization. Candidates are expected to receive biblical, theological and pedagogical formation, and the episcopal conferences are invited to determine the necessary process of formation and the normative criteria for admission to this ministry. The first women were installed as lectors and catechists on 23 January 2022.

Beyond formal ministries, parish and diocesan life depends on catechists who prepare children and adults for the sacraments, on lay councils and volunteers in charitable work, and on lay movements such as the Neocatechumenal Way, the Focolare Movement and Communion and Liberation. Opus Dei, which was erected as a personal prelature in 1982, combines lay members with a clerical component under a prelate. These movements vary widely in structure and in their relationship to local bishops, and their growth has been a point of ongoing discussion in the Church.

Origins and Early Church

The Church traces its origins to the small community of Jewish followers that formed around Jesus in Jerusalem, and to the Twelve apostles whom he had chosen. In the decades after his death, the movement spread through the eastern Mediterranean, largely through the missionary journeys of Paul, whose letters to communities in Greece, Asia Minor and Rome later became part of the New Testament. These early groups were local and relatively autonomous. Each was led by elders and overseers, and the Church later came to see the apostles' authority as passing to the bishops who succeeded them, a principle usually called apostolic succession.

Rome's special place rests on a tradition that the apostles Peter and Paul died there. Clement of Rome, writing to the Corinthians around 96, referred to the persecution of Christians in Rome and reported that Peter and Paul had been martyred in the imperial capital. Later writers went further. Irenaeus, writing around 180, expressed a strong belief that Peter had founded and organized the Church in Rome. Catholic tradition adds that Peter was Rome's first bishop and that Linus succeeded him, a claim that appears in the early episcopal lists. Historians are more cautious. Some have argued that the idea of Peter founding the Roman church cannot be traced back before the third century, but many scholars conclude that Peter was indeed martyred in Rome during the reign of Nero. Writers such as Dionysius of Corinth, who in the 170s addressed the Roman bishop Soter, also treated Rome as a church that carried the legacy of both apostles. The city's prestige owed as much to these martyrdoms as to its political role.

Persecution was intermittent and local for much of the first three centuries. Nero's attacks on Christians in Rome around 64 were followed by episodes under other emperors, most severely the Great Persecution launched under Diocletian in 303. Under Roman law Christianity had no protected status, and from early in its existence, Christianity had been regarded as a religio illicita (an illicit cult) in the Roman Empire. Persecution ended in stages. Galerius halted it in 311, and the Edict of Milan followed in 313.

The Edict of Milan, issued by Constantine the Great and his co-emperor Licinius, was a decisive turning point. It granted Christians, along with all other religious groups, the freedom to practice their beliefs without interference from the state. The edict also mandated the return of confiscated properties to Christian communities. Constantine went further in later years, supporting the Church financially, building various basilicas, granting privileges such as exemption from certain taxes to clergy, and promoting Christians to high-ranking offices. His support did not end paganism at once, and Constantine himself continued to tolerate traditional Roman cults.

The doctrinal controversies of the period increasingly tied the Church to imperial politics. The dispute over Arianism, which held that Christ was subordinate to the Father, became widespread enough that Constantine convened the First Council of Nicaea in 325, the first ecumenical council. The council formulated a creed stating that Christ the Son is eternal and of the same substance as the Father and the Holy Spirit. The Nicene Creed remains central to Catholic belief. Notably, the bishop of Rome did not even attend the council. Rome's bishop was still a major figure, but he was not yet the dominant voice of Christian doctrine. Imperial recognition also brought a new political dimension. In 380, the emperor Theodosius I formally declared Christianity the state religion of the empire and prohibited pagan practices.

By the late fourth century, the Church had a settled structure of bishops, each governing a city and its surrounding region, with the most important sees ranked above the others. Rome held a leading position from early on, partly because of its apostolic associations and its status as the imperial capital. The title "pope" (from the Greek for "father") was not yet reserved for the Roman bishop. The first bishop of Rome to be contemporaneously referred to as "Pope" is Damasus I (366–384). Rome's primacy in this period was a matter of honor and influence, and it was contested by sees in the East, especially Constantinople, Alexandria and Antioch. The later division between Latin and Greek Christianity grew out of these rivalries.

The Medieval Church

Papal reform and the Investiture Controversy

Before the eleventh century, the Church was heavily decentralized, and the pope held little power outside his position as Bishop of Rome. Reform efforts took hold in Rome around 1049. Their priorities were canonical elections, the ban on simony (buying church offices), and clerical celibacy, and the campaign soon reached the question of who could appoint bishops and abbots. A decree issued in 1059 under Nicholas II confined papal elections to the cardinals, a step that laid the groundwork for the modern papal conclave.

Under Gregory VII, the reform campaign collided with secular rulers. The Investiture Controversy, which ran from 1075 to 1122, was a struggle over the appointment of church officials. Secular authorities, including kings and princes, sought to keep their right to appoint bishops and abbots, while the papacy aimed to reclaim this authority for the Church. The conflict peaked when Gregory excommunicated Henry IV, the Holy Roman Emperor, and Henry sought forgiveness at Canossa. Gregory was also the first pope to depose a crowned ruler. The dispute spread into a long period of unrest in Germany, and it was settled by the Concordat of Worms in 1122, which recognized the Church's right to appoint bishops while allowing secular leaders some authority over them in non-religious matters.

Monasteries and learning

Monastic houses, most of them following the Rule of Saint Benedict, were among the most stable institutions of the early and high Middle Ages. Monks copied and preserved manuscripts of classical and Christian works in their scriptoria, which helped keep Latin learning alive after the collapse of Roman administration in the West. Many abbeys also ran schools for boys who were to enter religious life or who needed basic literacy. As large landholders, they cleared and drained land, managed farms, mills and vineyards, and developed the economic base that supported them. Reform movements such as Cluny (founded 910) and the Cistercians (founded 1098) sought to restore stricter observance.

The Crusades and the Great Schism

The Crusades, beginning with the call of Pope Urban II in 1095, extended papal influence into military and diplomatic affairs, but they also deepened hostility toward the Christian East. The break between Rome and Constantinople had built up over centuries. Language and politics played a part: Latin was the language of the church in the West, while Greek was spoken in the East, and the East operated as a theocracy with the Byzantine emperor holding authority over church and state, while the West maintained a separation of powers between spiritual and temporal leaders.

The formal rupture came in 1054. The Pope of Rome and the Patriarch of Constantinople excommunicated each other, and once each declared the other heretical, communion between Eastern and Western churches was severed. At the center of the dispute was the Roman pope's claim to universal jurisdiction and authority, along with the addition of the filioque to the Nicene Creed, which concerned whether the Holy Spirit proceeds from God the Father alone or from both the Father and the Son. Historians now often question whether 1054 was decisive, since more contemporary scholarship minimises the importance of this specific date. The break became permanent after the sack of Constantinople by Western Christians in 1204 during the Fourth Crusade.

Avignon, the Western Schism, and conciliarism

In 1309 Pope Clement V settled in Avignon, in southeastern France, as he sought the protection of the French monarchy from rebellions in Rome. Over the following decades, seven consecutive popes, all of Gallic origin, resided at Avignon between 1309 and 1375. Critics accused them of abandoning Rome and of serving French interests, and the period ended when Gregory XI returned the papacy to Rome in 1377.

After Gregory's death in 1378, the Western Schism began. The cardinals attempted to depose the volatile Urban VI and elect Clement VII in his place, and three lines of popes (Roman, Avignonese, and Pisan) would bring deep divisions to Europe with their competing claims to legitimacy. The schism lasted until 1417. Conciliarism emerged as the response: it held that supreme authority in the Church resided with an ecumenical council, apart from, despite, or even if opposed by, the pope. The Council of Pisa (1409) failed to end the division, but the Council of Constance (1414–1418) deposed rival claimants and declared that because councils represented the whole body of the Church, their authority was greater than that of popes. Its decree Frequens aimed to make councils a regular assembly, but the conciliar movement soon began to fall apart. The election of Martin V in 1417 restored a single line of popes, and the papacy regained its authority, though the episode left lasting doubts about papal power.

Universities and scholastic theology

From the twelfth century, cathedral and monastic schools developed into universities in places such as Bologna, Paris, Oxford, and Cambridge, which became centers of law, medicine, and theology. Scholastic theology, which used logical method to reconcile faith with the recovered works of Aristotle, reached its height in Thomas Aquinas (1225–1274), a Dominican whose Summa Theologiae organized Christian doctrine into a systematic whole. Scholasticism shaped the training of clergy and set the terms for later Catholic theology.

Reformation and Counter-Reformation

The Catholic response to the Reformation took decades. It began with Martin Luther's challenge in 1517 to the sale of indulgences and to papal claims to control doctrine and salvation. Luther's writings spread rapidly through print, and within a few generations Western Christendom had divided into Lutheran, Reformed, and Anglican churches alongside Rome. Historians often call the Catholic side of this process the Counter-Reformation, though many Catholic scholars prefer "Catholic Reform," because much of the internal renewal began before the confessional split had hardened.

The Council of Trent

The central event was the Council of Trent, which Pope Paul III convened. The Council met for twenty-five sessions between 13 December 1545 and 4 December 1563. Its work was carried on under three successive popes, and it issued doctrinal definitions alongside disciplinary reforms. In April 1546 the fourth session settled the canon of Scripture and gave the Latin Vulgate authority for public reading and teaching, fixing the canon of Scripture and the authority of the Latin Vulgate. The council also held that Scripture and unwritten apostolic tradition both deserved equal reverence, a position that directly contradicted the Protestant principle of <i>sola scriptura</i>.

The decree on justification was the most carefully worked text of the council. It was promulgated at Session 6, on 13 January 1547, and it treated justification as more than forgiveness. The council defined it to include "sanctification and renewal of the inward man" rather than pardon alone, and it insisted that human cooperation with grace was necessary. In the same year, the council reaffirmed that all seven sacraments were instituted by Christ, which answered Protestant reductions of their number. On the disciplinary side, the decrees addressed bishops' residence in their dioceses, clerical reform, marriage, and the training of priests, including seminaries.

The Jesuits and the new orders

Among the most influential responses was the Society of Jesus. Ignatius of Loyola, a Basque military officer turned priest and religious leader, formed the Society of Jesus to serve the pope. Sources differ on the founding date: Ignatius and his first companions gathered in Paris in 1534, while in September 1540, Pope Paul III approved Ignatius' outline of the Society of Jesus. The order was built around mission and teaching. Its members initially did not plan to run schools, but before long they were led to start colleges for the education of the young men who flocked to join their religious order. By the time of his death (1556), there were 35 such colleges, and by the time the order was suppressed in 1773, the number had grown to over 800. Jesuits also founded institutions in Rome, including the Roman College, later known as the Gregorian University, and the Germanicum, a seminary for German priests. Their missionaries were sent to India, Brazil, the Congo region, and Ethiopia during Ignatius's lifetime. Other orders, including the Capuchins, Theatines, and Ursulines, pursued preaching, pastoral care, and teaching in the same period.

Censorship and the Inquisition

Doctrinal enforcement relied on institutions that became associated with the period. Pope Paul III established the Roman Inquisition in 1542, most likely as a central body for Church doctrine. The Roman Inquisition was designed chiefly to combat Protestantism. Its practice was comparatively restrained: in Roman trials, the use of torture was less barbaric, and the procedures resulted in far fewer executions, than in the trials of the Spanish Inquisition.

The Index of Forbidden Books was the most visible instrument of control. The first Index Librorum Prohibitorum was published in 1559 by the Sacred Congregation of the Roman Inquisition to combat the spread of some of the writings of the Protestant Reformation. Its scope was broad. The list condemned the complete works of nearly 550 writers and a host of individual titles, including all of the works of Desiderius Erasmus. It also covered astronomy: unexpurgated versions of On the Revolutions of the Heavenly Spheres were placed on the Index. The Index was criticized as harsh even by some Jesuit scholars, and it was widely criticized as draconian and largely ignored after Paul's death in August, 1559. A 1561 decree under Pius IV moderated enforcement. The list continued to be published until 1966.

Religious wars and their aftermath

The doctrinal hardening coincided with prolonged armed conflict. The Peace of Augsburg in 1555 allowed German princes to choose between Catholicism and Lutheranism for their territories. In France, the Wars of Religion ran from 1562 to 1598, and the Thirty Years' War, which ended with the Peace of Westphalia in 1648, drew in most of the major European powers. By the mid-seventeenth century, Catholic and Protestant identities had become tied to political loyalties across much of Europe, and the Catholic Church had lost its claim to be the single church of Western Christendom. Its missionary and educational efforts, however, strengthened Catholic communities in regions that remained loyal to Rome.

Global Mission and the Early Modern World

From the sixteenth century, Catholic missionary expansion accompanied European overseas empires, and the crowns of Spain and Portugal often directed it. To bring this work under direct papal control, Gregory XV founded the Sacred Congregation for the Propagation of the Faith on 6 January 1622. Its formal charter followed in June of that year. Usually called Propaganda Fide, the body began with thirteen cardinals and two prelates and was meant to move mission work beyond the practices of colonial patronage and the rivalries among religious orders. It supervised mission territories of the Latin Church until it was merged into the Dicastery for Evangelization in 2022.

In the Americas, Franciscans, Dominicans, Augustinians and, from the late sixteenth century, Jesuits founded parishes, mission towns and schools. Under the Spanish Patronato Real and the Portuguese padroado system, monarchs held rights over episcopal appointments and church funding, which tied missions closely to imperial government. Friars learned Indigenous languages and produced grammars and catechisms. The Jesuit reductions in Paraguay organized Guaraní communities until the order's expulsion in 1767. Church authority was also used to justify forced labour and to suppress Indigenous religious practices, notably in the Andes. Critics such as Bartolomé de las Casas condemned the abuse of Indigenous people, yet religious orders and other church institutions also owned enslaved Africans on plantations. Mexico City and Lima established universities in 1551, and Catholic schools educated colonial elites, although access for Indigenous and mixed-descent students was restricted.

The Jesuits pursued a policy of accommodation, adapting Christian presentation to local elites. In China, matteo-ricci (1552–1610) learned Chinese, gained a hearing among scholars through mathematics and astronomy, and argued that ancestral rites were civic expressions of filial piety rather than religious worship. His approach shaped Jesuit practice in China for much of the seventeenth century. In South India, Roberto de Nobili (1577–1656) reached Madurai in 1606, adopted the appearance of a Hindu sannyasi, learned Sanskrit and Tamil, and sought converts among high-caste Brahmins. His methods provoked objections from rival orders and some Jesuits, and he was eventually barred from Madurai.

Accommodation was contested within the Church. The Chinese Rites Controversy, which ran from the 1630s into the eighteenth century, was the most prominent dispute. Dominican and Franciscan missionaries reported the Jesuit practices to Rome. Propaganda condemned the rites in 1645 and lifted that ban in 1656, and later popes issued conflicting rulings, though Clement XI ruled against accommodation in the early 1700s. The Chinese emperor responded by restricting Christian missions. Benedict XIV's 1742 condemnation closed the matter for the time being, and the Society of Jesus was suppressed in 1773. In 1939 Pius XII permitted Chinese Catholics to observe ancestral rites, a decision that later historians regard as a belated reversal. Sources differ on some dates in this chronology, and the outcome of the dispute shaped Catholic mission strategy for generations.

Outside Europe, Catholic communities took shape through a mix of colonial structures and local initiative. Propaganda founded the Collegium Urbanum in 1627 to train clergy from many nations. In the Kingdom of Kongo, King Afonso I wrote to the Portuguese crown in the early sixteenth century asking for priests and schooling, which indicates the importance Africans themselves placed on the new religion. In Asia, the Paris Foreign Missions Society was founded in 1658 after Alexandre de Rhodes urged Rome to appoint bishops for the region, so that local Christians would not be left without sacraments. Even so, Indigenous and Asian candidates for the priesthood often faced racial barriers, and the first Chinese bishops were not consecrated until 1926. The development of local clergy and churches was therefore slow and uneven, and it became a central concern for missionary policy only in the twentieth century.

The Modern Church: Papal States and the Vatican

For more than a thousand years the popes governed a band of territory in central Italy, the Papal States, and this temporal power shaped the Church's relations with the modern state. The arrangement ended in 1870, when the newly unified Kingdom of Italy took Rome. The resulting dispute, known as the "Roman Question," was not settled until 1929.

The loss of the Papal States

Italian unification, driven by the Risorgimento, reduced papal territory during the 1860s. Central Italian regions voted to join Piedmont-Sardinia in 1860, and the pope kept only Rome and its surroundings, protected by French troops. When France withdrew its garrison during the Franco-Prussian War, Italian forces entered Rome on 20 September 1870, and the city became the capital of Italy. Pius IX refused to accept the new order. He described himself as a "prisoner" of the Vatican and maintained that Catholics should not take part in Italian national elections, a policy known as non expedit.

Italy responded with the Law of Guarantees (1871), which granted the pope sovereign honours, control of the Vatican palaces and an annual payment, but did not restore any territory. Pius IX and his successors rejected the law because it placed the papacy under Italian legislation rather than recognizing it as an independent sovereign. The standoff left the Holy See without a clearly defined international status for nearly six decades. The ban on Catholic electoral participation was relaxed only after the First World War, when Catholics founded the Italian People's Party.

The First Vatican Council and papal primacy

The First Vatican Council, convened by Pius IX in December 1869, addressed the Church's relation to modern thought and the authority of the pope. Its most consequential act was the constitution Pastor aeternus, approved on 18 July 1870. It affirmed the pope's full jurisdictional primacy over the universal Church and defined that, when he speaks ex cathedra on faith or morals, he possesses the charism of infallibility. The definition was deliberately narrow. It applies only to formal teaching addressed to the whole Church on matters of faith or morals, not to every papal statement. The council was also deeply divided. A minority of bishops, many from German-speaking lands and France, opposed a definition, and some left Rome before the final vote. Within weeks, the advance of Italian troops led to the council's suspension, and it was never resumed.

Nationalism, liberalism and the modern state

The Church's stance toward the modern state had been set earlier by Pius IX's Syllabus of Errors (1864), which condemned, among other propositions, the idea that the Church should reconcile itself with liberalism and modern civilization. In the later nineteenth century this opposition took concrete form in conflicts with liberal and anticlerical governments. In Prussia, Bismarck's Kulturkampf (1871–1878) placed clergy and Catholic schools under state control, and many bishops were imprisoned or exiled before the measures were largely withdrawn. In France, the 1905 law separating church and state ended state support for worship, and Pius X condemned it. In Mexico, the anticlerical constitution of 1917 contributed to the Cristero War (1926–1929).

The rise of fascism, Nazism and communism posed a further challenge. Pius XI signed the Reichskonkordat with the Nazi government in 1933, but in 1937 he issued Mit brennender Sorge, which criticized Nazi ideology and violations of the agreement. In Italy, the regime restricted Catholic Action, and Pius XI protested in 1931. During the Second World War the Holy See pursued a policy of formal neutrality and humanitarian aid, and many Catholic institutions and individuals sheltered Jews. However, the wartime conduct of Pius XII, especially regarding the Holocaust, remains a subject of sustained historical debate. Under communist regimes in Eastern Europe, the Church faced suppression and imprisonment of bishops, including Cardinal Mindszenty in Hungary. In 1949 the Holy Office decreed that Catholics who supported communist parties were excommunicated.

The Lateran Treaty and Vatican City State

The Roman Question was settled by the Lateran Treaty, signed on 11 February 1929 by Cardinal Pietro Gasparri for the Holy See and by Benito Mussolini for Italy. The agreement consisted of three instruments. The first recognized the Vatican City State as an independent sovereign territory, with the pope as its sovereign. The second, a financial convention, gave the Holy See compensation for the lost Papal States, in cash and government bonds. The third, a concordat, declared Catholicism the sole religion of the Italian state and provided for religious instruction in public schools. The concordat was revised in 1984, which ended the state-religion provision.

Vatican City covers roughly 0.44 square kilometres, making it the smallest sovereign state in the world. Its creation allowed the papacy to hold full international personality while remaining territorially small, and the Holy See has since maintained diplomatic relations with states across the world. The settlement of 1929 gave the Church a secure sovereign base, but it also tied its public standing to the political regimes with which it negotiated, a tension that continued throughout the twentieth century.

Second Vatican Council and Its Aftermath

Summoned by John XXIII, the assembly sat in four annual sessions at St Peter's Basilica between October 1962 and December 1965 It met in four annual sessions in St. Peter's Basilica in Vatican City between 11 October 1962 and 8 December 1965, and it issued sixteen documents in total It issued sixteen conciliar documents. The Second Vatican Council grouped these texts into four constitutions, nine decrees and three declarations Four constitutions: Sacrosanctum Concilium (Sacred liturgy); Lumen gentium (Catholic Church); Dei verbum (Divine revelation); Gaudium et spes (Modern world); Nine decrees. The liturgy constitution, Sacrosanctum Concilium, passed by 2,147 votes to 4 and was promulgated on 4 December 1963 It was approved by the assembled bishops by a vote of 2,147 to 4 and promulgated by Pope Paul VI on 4 December 1963..

The constitution Lumen gentium (1964) favoured scriptural language over legal classification when describing the Church it reflects the attempt of the council fathers to use biblical terms rather than juridical categories to describe the Roman Catholic Church.. The declaration Nostra aetate (1965) expressed regret for the Church's past hostility toward Jews and affirmed the worth of Judaism and Islam apologized for the church's history of antisemitism and recognized the legitimacy of Judaism and Islam.. Its drafting provoked a sharp internal dispute, the so-called "great debate" of September 1964 providing the history of its drafting and the "great debate" on it that occurred during the Council in September 1964..

Liturgical reform and the vernacular

Sacrosanctum Concilium called for a simplification of the rites and opened the way for vernacular languages in celebrations The guidelines of Sacrosanctum Concilium called for a "simplification" of the liturgy and introduced vernacular languages in the context of celebrations.. The text was more cautious than its later implementation: it "opened up the possibility of linguistic change but did not make it mandatory", leaving the decisions to local groups of bishops instructed local groups of bishops to consider the role of the vernacular.. Its broader aim was to give lay worshippers a larger role in the Mass established greater participation by laypeople in the celebration of mass.

Implementation was entrusted to a new body. Work began in February 1964 under Annibale Bugnini, who led a Consilium for carrying out the reform Beginning in February 1964, under the direction of Annibale Bugnini, a Consilium for the Execution of the Liturgical Reform undertook to apply the conciliar Constitution on the liturgy. By 1967 the group had produced an experimental rite that mixed Latin and Italian, and by the end of 1969 a wholly vernacular Mass had been completed By 1967, they had devised an "experimental" liturgy, which was celebrated in the Sistine Chapel before a number of hierarchs of the church. This liturgy united elements of the vernacular (Italian, in that case) and Latin.. Bugnini later acknowledged that the group had read the constitution very broadly he and his colleagues had given Sacrosanctum concilium such a "broad interpretation" that he had to rationalize what they had done.. Critics writing in the Adoremus journal have argued that the reform has not met its stated goals Fifty years later the liturgical reform has not reached its goal. The later disputes over the Latin Mass are treated elsewhere in this entry.

Ecumenical and interreligious change

The council also addressed relations with other Christians and other faiths. Its constitutions and decrees included texts on ecumenism, Eastern Catholic churches and religious freedom Unitatis redintegratio (Ecumenism); Christus Dominus (Role of bishops); Perfectae caritatis (Religious life); Optatam totius (Priestly training); Apostolicam actuositatem (Role of the laity), and the declaration on religious freedom, Dignitatis humanae, was among the three declarations. The Church's changed stance toward non-Christian religions, especially Judaism, is one of the most visible results of the council. Interpretation of these changes remains contested. Some Catholics hold that the reforms should be read in continuity with earlier teaching, while others see a break; the American commentator George Weigel argued that the parts of the Church that accepted the magisterium as the authentic reading of the council were the living ones the living parts of the Church are those that have accepted the magisterium ... as the authentic interpretation of Vatican II..

The Catechism and later reforms

The council's teaching was systematised in the Catechism of the Catholic Church. The idea emerged at an extraordinary synod of bishops in 1985 The Catechism of the Catholic Church originated with a recommendation made at the Extraordinary Synod of Bishops in 1985., and a commission was appointed the following year In 1986 Pope John Paul II appointed a Commission of Cardinals and Bishops to develop a compendium of Catholic doctrine.. The commission was chaired by Joseph Ratzinger, the future Benedict XVI The chair of this commission was none other than Joseph Ratzinger, prefect of the Congregation of the Doctrine of the Faith and future Pope Benedict XVI.. Bishops worldwide proposed a large number of changes, and in 1990 the commission reviewed over 24,000 amendments In 1990 the Commission examined and evaluated over 24,000 amendments suggested by the world's bishops.. John Paul II promulgated the text by the apostolic constitution Fidei Depositum on 11 October 1992 On October 11, 1992, Pope John Paul II officially promulgated the Catechism of the Catholic Church with his apostolic constitution Fidei Depositum.. Benedict XVI later described it as "one of the most important fruits of the Second Vatican Council". Later revisions have also altered its content; in 2018, for example, Pope Francis changed the section on capital punishment That year, Pope Francis revised the Catechism to read that the death penalty is "inadmissible".

Social Teaching and Public Engagement

Origins and Rerum novarum

Catholic social teaching is the Church's official body of teaching on economic, political, and social justice. Its modern starting point is Rerum novarum, which Leo XIII issued on May 15, 1891, addressing the hardship of workers during the Industrial Revolution. Leo was critical of attempts by socialists and Marxists to effect such change by abolishing private property or by encouraging class struggle, but he also argued that the state had a duty to act. He backed appropriately organized workers' unions and held that workers should receive a living wage. The encyclical also defended the right to associate, which Catholic social teaching states is grounded in natural law. Its treatment of property was qualified: private property was defended but limited.

Core Principles

Later writers commonly organize the tradition around a small set of principles. Human dignity is treated as the foundation, since Human Dignity, embodied in a correct understanding of the human person, is the greatest. The others flow from it. The other principles are solidarity, the common good and subsidiarity. Subsidiarity holds that problems should be solved at the most local level possible; it was formulated explicitly in Pius XI's state-and-society-related encyclical Quadragesimo anno (1931). Leo XIII also introduced the idea of a preferential option for the poor, which Pope Leo also presented as a distinctively Catholic principle.

Later major documents extended these ideas to new conditions. Positions in Rerum novarum are supplemented by later encyclicals, including Quadragesimo anno (1931), Mater et magistra (1961), Octogesima adveniens (1971), and Centesimus annus (1991). Centesimus annus, written by John Paul II, was written in 1991, during the last days of the Cold War and addressed the political and economic order that followed. The same source list notes that Leo XIV's Magnifica humanitas (2026) marked another anniversary of Rerum novarum.

Laudato si' and Environmental Teaching

Pope Francis's encyclical Laudato si' was released on June 18, 2015. Its title comes from the prayer by Saint Francis of Assisi entitled Canticle of Brother Sun and Sister Moon. The text is widely described as the first time an encyclical had been devoted wholly to ecology. It links environmental degradation with poverty, with the aim of addressing the poorest of the poor countries, addressing jointly the human environment and the natural environment, an approach it calls integral ecology. Commentators also note its call for a radical break with consumerist lifestyles.

The encyclical was followed by further initiatives. In 2024 Francis issued the apostolic exhortation Laudate Deum, in which he said that "our responses have not been adequate" in the years since 2015. In 2021 he launched a seven-year Church action plan based on the encyclical. The movement it inspired, now known as the Laudato Si' Movement, has worked in 140 countries and trained about 20,000 community leaders.

Caritas Internationalis and Humanitarian Work

The Church's charitable structure is coordinated by Caritas Internationalis, which is a global confederation of over 160 Catholic organisations working in more than 200 countries. Its General Secretariat is headquartered in Vatican City, where it coordinates responses to major humanitarian emergencies and supports capacity-building among its members.

Sources differ on the organization's founding date. Originally known as Caritas ("Charity" in Latin), the organization was founded in Germany in 1897 by a young Roman Catholic priest, Lorenz Werthmann, while the confederation was formally established in 1928 under the name Caritas Catholica, with its headquarters at Caritas Switzerland in Lucerne.

Caritas members work across humanitarian emergencies, international development, social and health services. Their stated mission is to serve the poor and to promote charity and justice throughout the world, and they assist people regardless of race or religion. Its members respond to emergencies caused by both natural disasters and human actions. The sources consulted do not give detailed information on refugee programmes, which vary by country.

Education, Health Care, Arts, and Culture

Schools and universities

Schools and universities are among the largest institutional footprints of the Church. The Fides agency's 2023 statistics count roughly 74,550 Church-run kindergartens, 102,455 primary schools and 52,085 secondary schools, with 7.6 million, 36.2 million and 20.7 million pupils respectively. Higher education adds about 4.5 million students at university institutes affiliated with the Catholic Church. A 2022 report put Catholic schools' share of primary enrolment worldwide at an estimated 4.8 percent, which shows how concentrated Church schooling is in some regions and how small it is globally. Between 1980 and 2019, the number of Church-managed preschools, primary schools and secondary schools increased by 54 percent, and the largest increase took place in Africa.

The Church's universities have roots in the medieval period. Many early universities, including Paris, grew out of cathedral and monastic schools and operated under church authority. Later foundations such as the Catholic University of Leuven (1425) and Georgetown (1789, Jesuit-founded) continued this tradition.

Health care

The Church is also a major provider of health care, often in places where public services are thin. One Catholic-run health resource calls the Church the largest non-governmental provider of health care in the world, and this claim is widely repeated but comes from a Church-affiliated source. The official Fides figures list 5,377 hospitals and 13,895 dispensaries, alongside large networks of homes for the elderly, disabled and chronically ill. Care is often framed as a response to scriptural instruction, since Catholic healthcare has been largely inspired by scriptural instruction to "heal the sick".

The number of facilities has not grown steadily. Researchers note that the number of health facilities managed by the Church rose from 19,119 in 1980 to 24,031 in 2010, then fell back to 20,740 facilities in 2020. Hospital numbers in particular have been falling for some time, possibly because of consolidation and takeovers by private chains in wealthy countries. Africa has become the centre of growth: by 2020 the Church operated 35.5 percent of all health centers globally.

Religious patronage of art, music and architecture

Popes and cardinals were among the most important patrons of European art, and this patronage shaped the Church's visual culture. The Sistine Chapel is the clearest example. Built under Pope Sixtus IV, it was built by Pope Sixtus IV (1473–1481), although other sources date its construction to 1475–1483, which illustrates how dates vary in the secondary literature. Its walls were decorated by a group of Renaissance painters that included Sandro Botticelli, Pietro Perugino, Pinturicchio, Domenico Ghirlandaio, Cosimo Rosselli and Luca Signorelli. The ceiling, commissioned by Julius II, was painted by Michelangelo, and it was completed between 1508 and 1512.

Papal commissions also shaped architecture. St. Peter's Basilica stands over the tomb of Saint Peter, and its dome drew heavily on Michelangelo's designs, although it was completed after his death. Musically, the Roman tradition of Gregorian chant and the polyphony of composers such as Palestrina developed in papal and cathedral chapels, and they remain central to Catholic liturgical music.

The Vatican Museums and the Apostolic Library

The Vatican Museums grew from papal collections. Accounts differ on the starting point: one traces it to the discovery of Laocoön and His Sons near the basilica of Santa Maria Maggiore in 1506, while another says the collection originated in the private summer residence of Pope Julius II in 1503. Today the museums hold collections from ancient Egyptian artifacts to Renaissance masterpieces by Michelangelo and Raphael, and the Etruscan collection is regarded as one of the most important in the world for its richness and completeness. The museums attract millions of visitors every year.

The Vatican Apostolic Library was officially established in 1475 by Pope Sixtus IV, after earlier collecting efforts under Nicholas V, who wanted scholars to have access to Latin, Greek and Hebrew texts. Holdings figures vary by source. The official library reports over 180,000 manuscripts (including archival units) and 1,600,000 printed books, while popular guides cite around 75,000 manuscripts. Its collection includes the Codex Vaticanus, one of the oldest nearly complete Bible manuscripts in existence. The library suffered losses during the 1527 Sack of Rome and in the Napoleonic era, when manuscripts were moved to Paris. Most manuscripts were microfilmed in the early 1950s, and the Vatican Film Library is located at St Louis University in Missouri. Digitization of the collections began in 2010.

The Vatican Apostolic Archives are also significant. They are more than 1,000 years of history in 85 kilometres of shelves, and millions of papers and parchments are available to scholars of all nationalities, regardless of religious faith.

Culture, literature and public holidays

The Church's liturgical calendar has shaped public life in many countries. Christmas, Easter, the Assumption and All Saints' Day remain national holidays in many Catholic-majority states, and religious processions such as Holy Week in Seville or Corpus Christi celebrations are part of local cultural life. Medieval and Renaissance literature was largely produced within church-linked institutions, and religious themes continue to inform European and Latin American literature, music and popular festivals. The Church's own cultural institutions, including its museums, libraries and archives, function as public resources for scholarship and tourism as well as for worship.

Relations with Science and Scholarship

The Galileo affair

The best-known episode in the Church's dealings with science is the case of Galileo Galilei. In 1616 the Congregation of the Index declared the claim that the Earth moves to be "false and altogether contrary to Scripture," and in 1633 the Roman Inquisition convicted Galileo of holding the Copernican view and required him to abjure it. He spent the rest of his life under house arrest. Historians stress that the condemnation rested largely on scriptural and philosophical grounds rather than on decisive new evidence, and that Galileo's works were not removed from the Index of Forbidden Books until 1835.

In 1979 John Paul II asked a commission to re-examine the case. Its results were presented on 31 October 1992 at a meeting of the Pontifical Academy of Sciences, where the pope acknowledged that theologians had erred by turning a question of fact about the heavens into a matter of doctrine. Newspapers of the time often described the speech as an apology or a pardon. In fact there was no retrial, and the pope also repeated his view that the affair had become a "myth" distorted by later polemics. The Church had in practice taught the heliocentric model for generations before 1992, so the speech is better understood as an official acknowledgment of error in the handling of the case than as a discovery that Galileo had been right.

Catholic scientists and clergy

Catholic clergy have contributed to many fields. Gregor Mendel, an Augustinian friar at the abbey of St Thomas in Brno, carried out his experiments on the inheritance of traits in pea plants in the 1850s and 1860s; his paper was published in 1866 and was largely ignored until it was rediscovered around 1900. The Belgian priest Georges Lemaître, a physicist and mathematician, proposed in 1927 that the universe had expanded from a "primeval atom," an idea that became the foundation of the Big Bang theory. Jesuits were especially prominent in astronomy. Christoph Clavius, a Jesuit mathematician at the Roman College, helped explain the 1582 reform of the calendar, and Angelo Secchi, director of the Roman College Observatory from 1850 until his death in 1878, pioneered the classification of stars by their spectra.

The Pontifical Academy of Sciences

The Pontifical Academy of Sciences traces its origins to the Accademia dei Lincei, founded in Rome in 1603 by Federico Cesi, which admitted Galileo as a member in 1610. After lapsing, it was refounded by Pius IX in 1847 as the Pontifical Academy of the New Lynxes, and Pius XI reconstituted it in 1936 under its present name. Its statutes describe its aim as promoting the mathematical, physical and natural sciences and the study of related epistemological problems. The academy describes itself as an independent body within the Holy See, and it claims to be the only supranational academy of sciences in the world. Its members are scientists chosen from many countries, and its work has grown more interdisciplinary since the 1930s.

The Vatican Observatory

The Vatican Observatory (Specola Vaticana) is often traced back to the committee that studied the calendar reform of 1582 under Gregory XIII. The modern institution took shape in the 1930s. Because light pollution in Rome made observation difficult, Pius XI moved the observatory to the papal summer residence at Castel Gandolfo, and he inaugurated the new site on 29 September 1935. Its staff has been drawn from the Jesuits since then. When city lights reached Castel Gandolfo as well, the observatory opened a division in Tucson, Arizona, in 1980, and the Vatican Advanced Technology Telescope followed in 1993. Its research areas include planetary science, stellar astronomy, extragalactic astronomy and cosmology.

Evolution and the origin of the universe

The Church has not adopted a single scientific theory of origins, but its official positions have shifted over time. In the 1950 encyclical Humani generis, Pius XII allowed research into the evolution of the human body, while insisting that the human soul is created immediately by God. In 1951 he suggested to the Pontifical Academy that the Big Bang was consistent with a creation in time, a reading that Lemaître and other scientists cautioned against tying too closely to theology. In a 1996 message to the academy, John Paul II described evolution as more than a hypothesis, while holding that it cannot account for the spiritual soul. The current position, reflected in the Catechism of the Catholic Church, accepts that the human body may have developed from earlier living matter, but it insists on divine causality and on the special creation of the soul. Catholic teaching does not endorse natural selection as a complete explanation of human nature, and it rejects any reading of evolution that denies human dignity.

Faith, reason, and bioethics

The Church holds that faith and reason are complementary, a theme developed in John Paul II's 1998 encyclical Fides et ratio. The Church's contemporary engagement with science is most visible in bioethics. The 1987 instruction Donum vitae and the 2008 instruction Dignitas personae set out its objections to certain reproductive technologies, embryo research and some uses of stem cells, on the grounds that human life deserves respect from conception. The Vatican has also addressed emerging technologies directly. A 2025 joint document from the Dicastery for the Doctrine of the Faith and the Dicastery for Culture and Education, Antiqua et nova, examined artificial intelligence, and Pope Leo XIV has made AI a recurring theme of his teaching. The Church's position is that scientific progress should serve human dignity and the common good, and that technical capacity alone does not settle moral questions.

Ecumenism and Interreligious Dialogue

Catholic ecumenism was transformed by the Second Vatican Council and its aftermath. The rapprochement with Eastern Orthodoxy began with a historic meeting between Ecumenical Patriarch Athenagoras of Constantinople and Pope Paul VI on 5 and 6 January 1964 in Jerusalem. On 7 December 1965, the day before the Council closed, the Catholic–Orthodox Joint Declaration was read simultaneously at a public session of the Council in Rome and at a ceremony in Istanbul, withdrawing the exchange of excommunications between the Holy See and the Ecumenical Patriarchate of the 1054 Great Schism. The text stated that the censures "were not intended to break ecclesiastical communion between the Sees of Rome and Constantinople." Historians and theologians generally treat the gesture as a psychological and canonical step rather than a restoration of full communion. The Ecumenical Patriarch Bartholomew I later said, in 2019, that he regarded the reunification of Catholic and Orthodox churches as inevitable, but the theological questions of primacy and authority remain unresolved, and the two churches continue dialogue through a joint international commission.

With the Lutheran tradition, the most important agreement is the Joint Declaration on the Doctrine of Justification. It was signed on 31 October 1999 in Augsburg, Germany, by the Catholic Church and the Lutheran World Federation. The document grew out of dialogue that was initiated in 1967. Its drafting was not smooth: shortly before the signing, the Holy See issued a separate response that did not endorse the Joint Declaration as it stood but expressed a number of reservations and indicated that certain points needed to be clarified. The declaration states a consensus on the basic truths of justification, and it put an end to the official doctrinal condemnations issued at the time of the Reformation. The agreement was later affirmed by the World Methodist Council (2006), the Anglican Consultative Council (2016) and the World Communion of Reformed Churches (2017), which made it a multilateral agreement. Relations with Anglicans have also been pursued through the Anglican–Roman Catholic International Commission, established in 1969, which has produced agreed statements on the Eucharist and on ministry, although the ordination of women in several Anglican provinces has created serious obstacles since the 1970s.

Catholic engagement with non-Christian religions rests largely on the declaration Nostra aetate (1965), which affirmed the value of truths found in other religions, rejected the charge that Jews as a people were collectively responsible for the death of Jesus, and condemned antisemitism. Relations with Judaism have been developed through bilateral commissions and through papal visits to synagogues, while the Church has sought dialogue with Muslims through meetings and joint statements, including the 2019 Abu Dhabi document on human fraternity signed by Pope Francis and the Grand Imam of Al-Azhar. Dialogue with Hindu, Buddhist and other traditions has mostly taken the form of exchanges of scholars, monastic visits and contacts with religious leaders.

The most visible interreligious event was the World Day of Prayer for Peace held in Assisi on 27 October 1986. Called by John Paul II, the gathering brought together religious leaders to fast and pray for peace. Among them were 50 representatives of Christian churches in addition to the Catholics and 60 representatives of other world religions, and it was the first time in history that such a meeting took place. The format was deliberately limited. The pope stressed that one cannot "pray together" in the sense of making a common prayer, but one can be present when others pray, so each community prayed in its own place. According to the Vatican, joint prayers were not offered in order to avoid any form of relativism or syncretism. Assisi has been followed by later gatherings, and the Community of Sant'Egidio has organized annual International Meetings of Prayer for Peace in its spirit.

Ecumenical and interreligious initiatives remain contested within the Church as well as outside it. Some traditionalist critics regard the Joint Declaration with Lutherans as inconsistent with the Council of Trent, while some Orthodox leaders have objected to the Church's recognition of Eastern Catholic communities. Catholic officials generally present these efforts as a continuation of the Church's commitment to peace, reconciliation and dialogue, while acknowledging that doctrinal differences persist.

Contemporary Membership and Organization

Membership

The Vatican's statistical yearbooks show a Catholic population that is still growing in absolute terms but is shifting geographically. For 2024, the number of baptized Catholics worldwide remained stable at approximately 17.8%, reflecting growth roughly aligned with the rate of global population increase. Within that stable share, ratios fell in the Americas, Europe, and Oceania, while increasing in Africa and Asia. Sacramental activity follows the same pattern. The Church recorded about 13.07 million baptisms in 2024, a drop of 0.6 percent, and Africa accounted for 31.7 percent of them. Meanwhile, first communions and confirmations rose slightly.

Total headcounts differ by source. One compilation of the Vatican figures gives a global baptized population of just over 1.422 billion in 2024, while the World Christian Database counts 1.279 billion Catholics worldwide as of 2026. The gap shows how sensitive these totals are to the counting method used. The longer trend is clearer: between 2013 and 2018, there has been a reduction in the relative numbers in European and North American countries and an increase in all other geographical areas. In absolute terms, Catholics in the world in those years increased by almost 6 percent, from 1.254 billion to 1.329 billion.

Clergy and Religious Personnel

The annual yearbooks also track bishops, priests, deacons, and seminarians by country and continent. These numbers are the main evidence for the reduction of clergy in some regions, particularly where the share of Catholics has declined. Growth in Africa and Asia has not offset the shrinking clerical base in parts of Europe and North America.

The Synod on Synodality

The Synod on Synodality grew out of a two-year consultative process that began in 2021, incorporating 1,135 amendments from both collective and individual submissions. The assembly closed on 26 October 2024, when its members voted on a final document. Pope Francis approved the text immediately and declined to issue the post-synodal apostolic exhortation that usually follows a synod, so the document became part of papal teaching at once.

The document proposes strengthening pastoral councils at parish and diocesan levels and calls for regular ecclesiastical assemblies across all Church levels — including continental. It also asks for a revision of canon law that clarifies how consultation differs from deliberation. Despite these changes, the text emphasized the importance of maintaining the hierarchical structure of the Church, while integrating it with participation. The most contested point concerned the diaconate. Paragraph 60 left the question of women's access to the diaconate open, and it drew 97 votes against.

Implementation was assigned to the local churches. In July 2025 the General Secretariat of the Synod issued guidance for the implementation phase, a kind of map for the local churches in preparation for the 2028 ecclesial assembly. Pope Leo XIV, who emerged from the conclave in May 2025, has continued this process.

Governance, Finance, and Lay Participation

Since 2014, Pope Francis has reorganized the Holy See's finances. He created a Council for the Economy that includes "eight cardinals and bishops to reflect the universality of the church" and "seven lay experts of different nationalities with strong professional financial experience". Reporting to it is the Secretariat for the Economy, which holds authority over all the economic and administrative activities within the Holy See and the Vatican City State. In December 2020, the financial assets of the Secretariat of State were placed under the Administration of the Patrimony of the Holy See (APSA). Francis also closed 5,000 Vatican bank accounts early in his pontificate.

The Holy See's income is limited. It comes from donations, admissions to the Vatican museums, and returns on its assets and patrimony. Reform has not eliminated deficits. The Secretariat expected a multimillion-dollar deficit for 2021.

Lay participation has expanded in both finance and governance. The Vatican's stated aim was to emphasize the universal Church through universal representation within the Roman Curia, not just a heavily Roman or European representation. The Synod's final document goes further, calling for increased presence in synodal assemblies and all phases of ecclesiastical decision-making.

Controversies and Open Questions

Clergy sexual abuse

The abuse crisis is among the most serious challenges the Church faces. Reforms since the early 2000s have been real but contested. In 2019 Pope Francis abolished the rule of "pontifical secrecy" in abuse cases, so that it could no longer shield offenders or block police investigations. In June 2021, the Vatican announced sweeping changes to laws pertaining to clergy sexual abuse cases, bringing about the most extensive revision of the Code of Canon Law in four decades. The apostolic constitution <i>Pascite gregem Dei</i> created explicit offences: it explicitly criminalizes sexual abuse of adults by clergy and makes it possible to sanction laypeople holding church offices for similar offences. The reform also reframed the matter, moving the focus from a priest's breach of duties to a crime against the victim.

Critics argue that the structure remains largely internal. Canon law still does not require anyone within the church to report suspicions to secular authorities, and the penalties available may amount to little more than laicization or excommunication. A 2025 report from the Vatican's child protection commission described the church's handling of cases as a "decades-long pattern of mishandling reports" that retraumatized victims, and it called for financial reparations for the abused and tougher sanctions for the abusers and their enablers. That report covered 2024, before Leo XIV's election, and the pope has acknowledged that the scandal remains a "crisis" for the Church.

Women's ordination and ministry

Current doctrine excludes women from priestly and episcopal ordination. Pope John Paul II's 1994 apostolic letter <i>Ordinatio sacerdotalis</i> declared the Church has no authority to confer priestly ordination on women, and later popes have reaffirmed this position. Advocates for women's ordination and for women deacons cite the role of women in the early Church and in religious life, and Francis set up study commissions on the diaconate of women. Their findings did not produce a change in doctrine. Francis expanded formal lay roles: in 2021 he changed canon law so that women may be instituted as lectors and acolytes. Women also participated in the synodal process; the General Assembly of the Synod comprised 368 religious and lay people, including women, from around 100 countries when it met in 2024.

The celibacy requirement for Latin-rite priests is debated alongside this question. Eastern Catholic clergy may be married, and proposals to ordain <i>viri probati</i> (mature, married men) were raised at the 2019 Amazon synod in response to priest shortages. Francis did not adopt that proposal in his 2020 exhortation <i>Querida Amazonia</i>.

The Latin Mass and the authority of Vatican II

The conflict over the older liturgy began with Benedict XVI's 2007 letter <i>Summorum Pontificum</i>, which acknowledged the right of all priests to say Mass using the Roman Missal of 1962, which is in Latin. Francis reversed this with <i>Traditionis custodes</i> on 16 July 2021. While priests used to have broad rights to decide to celebrate the Traditional Latin Mass, the pope has now established a bishop's "exclusive competence" to authorize the use of the 1962 Roman Missal in his diocese. Bishops must also determine that existing Traditional Latin Mass groups in their diocese do not deny the validity of the Second Vatican Council and the teachings of the Catholic Church. Francis said the restrictions defended "the unity of the Body of Christ", and in December 2021 the liturgy congregation issued clarifications that bans confirmations and ordinations according to pre-Vatican II Roman Missals.

Traditionalist groups, including the Society of Saint Pius X, which has been in irregular status since its unauthorized episcopal consecrations in 1988, reject key aspects of Vatican II, so the dispute is about both ritual and ecclesiology. More recently, reports suggested that bishops could obtain renewable two-year exemptions. The Vatican's position has been described as continuity: the Pope "would not abrogate Traditionis Custodes" but would allow diocesan ordinaries who apply to the Dicastery for Divine Worship to grant a two-year, renewable exemption, while many commentators have noted years of rejected applications under the previous pontificate.

Sexuality, marriage, and divorce

The Catechism of 1992 describes homosexual acts as intrinsically disordered while calling for respectful treatment of persons with homosexual tendencies. The 2023 declaration <i>Fiducia supplicans</i> allowed non-liturgical blessings for couples in irregular situations, including same-sex couples, which prompted objections from several bishops' conferences, particularly in Africa. Catholic marriage is considered indissoluble; divorced Catholics may seek annulment, and the question of communion for divorced and civilly remarried Catholics was central to the synods of 2014–2015 and to <i>Amoris laetitia</i> (2016), which emphasized pastoral discernment.

Artificial intelligence and new technologies

The Church's engagement with new technology is a newer area of debate. <i>Antiqua et Nova</i>, a note issued on 28 January 2025 by the Dicastery for the Doctrine of the Faith and the Dicastery for Culture and Education, is a lengthy (117-paragraph) statement on the promises and dangers of artificial intelligence. It distinguishes machine learning from the developmental growth of human intelligence, which is shaped by embodied experience and social relationships. It argues that AI cannot currently replace moral discernment or the ability to establish authentic relationships. The document warns that use of AI in education could interfere with the development of students' ability to think independently, and it calls for a ban on autonomous weapons, which it says could empower "the instruments of war well beyond the scope of human oversight".

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215. One Year After Synod on Synodalityewtnvatican.com
216. New Vatican document calls Catholics to move forward together for synodalityncronline.org
217. New 'Synodal Church' is proceeding full steam ahead under Pope Leo XIV - LifeSitelifesitenews.com
218. Pope reforms Vatican finances - Inside The Vaticaninsidethevatican.com
219. Cardinal Pell calls for more lay involvement in Vatican financial reform effortsreligionnews.com
220. KEYS: Papal reforms that have increased transparency in the Vatican - Rome Reportsromereports.com
221. The death of Pope Francis: How is the Vatican financed?en.ara.cat
222. Secretariat for the Economyjoansrome.wordpress.com
223. Vatican financial reform aims to help the Church do its job bettercatholicnewsagency.com
224. Pope Francis promised 'decisive action' on sexual abuse, but critics say his legacy is complicated - ABC Newsabc.net.au
225. Vatican reforms penal code to combat clergy sex abusechristianpost.com
226. Pascite gregem Deien.wikipedia.org
227. Vatican report says clergy sex abuse victims need reparations and tangible sanctions to healncronline.org
228. Vatican Report Calls for Reparations for Abuse Victims And Tougher Sanctions for Abusersclaimsjournal.com
229. Pope opens new debates on Catholic Church futuregulfnews.com
230. Traditionis custodes: Vatican further tightens restrictions on Traditional Latin Mass - Adoremusadoremus.org
231. Traditionis Custodes: What you need to know about the Traditional Mass restrictionsewtnnews.com
232. Vatican signals continuity on Latin Mass restrictions despite rumoursthecatholicherald.com
233. New Vatican text explores challenges of Artificial Intelligence (AI)catholicculture.org
234. Highlights from the New Vatican Note on Artificial Intelligence, ‘Antiqua et Nova’ - Busted Halobustedhalo.com
235. Pope makes changes to church laws regarding sexual abusekatc.com
236. Traditionis custodes: Vatican further tightens restrictions on ...ewtnnews.com
237. Vatican’s New Guidelines Further Restrict Traditional Rites| National Catholic Registerncregister.com