Existentialism

Existentialism is a family of philosophical approaches concerned with human existence as lived from the standpoint of the individual. Its recurring questions concern freedom, responsibility, identity, mortality, and the possibility of meaning in a world that offers no universally accepted answers. Rather than beginning with an abstract definition of human nature, existential thinkers examine how people understand themselves through their choices, relationships, and circumstances. They disagree, however, about God, the scope of freedom, and the foundations of ethics, making existentialism a diverse tradition rather than a single doctrine.

Its principal nineteenth-century precursors include Søren Kierkegaard and Friedrich Nietzsche. In the twentieth century, phenomenology and the philosophies of Martin Heidegger and Karl Jaspers supplied important concepts and methods. Existentialism became an internationally prominent intellectual and cultural movement in France around World War II, especially through the work of Jean-Paul Sartre and Simone de Beauvoir. Other frequently associated figures, including Albert Camus, resisted the label or developed positions distinct from those of its leading advocates.

Existentialism has influenced literature, theatre, film, religious thought, feminism, and psychotherapy. Its continuing significance lies in its analyses of situated agency, self-deception, relations with others, and the tension between the search for meaning and the limits of human knowledge and control.

The term and the boundaries of the tradition

Existentialism designates a family of approaches in philosophy, rather than a school united by a single doctrine or method. Its recurrent concerns include the first-person character of existence, the relationship between circumstances and possibilities, and the responsibility involved in acting without guarantees of certainty or success. These concerns become philosophical problems because a description of what human beings generally are does not, by itself, settle how a particular person should live. In a narrower historical sense, existentialism names a twentieth-century European movement, especially its French formation around Jean-Paul Sartre and Simone de Beauvoir during and after World War II. In a broader interpretive sense, “existential” identifies themes in authors who neither belonged to that movement nor shared its theoretical commitments. The distinction prevents thematic resemblance from being mistaken for historical affiliation.

The vocabulary developed before existentialism became a widely recognized public label. The German term Existenzphilosophie, or “philosophy of existence,” circulated in the 1920s and 1930s; Fritz Heinemann used it in his 1929 book Neue Wege der Philosophie. It became associated particularly with Karl Jaspers and Martin Heidegger, although their projects differed substantially. Gabriel Marcel used the French term existentialisme in discussions of Sartre’s philosophy during the 1940s, but subsequently preferred “Christian Socratism” for his own position. Sartre initially resisted classification, then publicly adopted and defended the designation in his lecture “Existentialism Is a Humanism,” delivered in Paris on 29 October 1945 and published in 1946. His distinction there between Christian and atheistic existentialists helped popularize the idea of a shared philosophical orientation, but the grouping was his interpretation rather than an agreed declaration by everyone named.

Acceptance of the label therefore varies across the tradition’s conventional membership. Sartre and Beauvoir explicitly defended existentialism; Beauvoir’s The Ethics of Ambiguity (1947), for example, developed an existentialist ethical argument. By contrast, Søren Kierkegaard, who died in 1855, and Friedrich Nietzsche, who died in 1900, are retrospectively classified as precursors, not participants in the twentieth-century movement. Their contrasting religious commitments also resist assimilation into a single position. Heidegger rejected Sartre’s interpretation of his work in the Letter on Humanism, written in 1946 and published in 1947. Albert Camus likewise rejected the existentialist designation, despite his close historical association with Sartre and overlapping concerns about meaning and action. Such classifications can identify intellectual connections, but they require distinctions among influence, association, and self-identification.

Existentialism is not synonymous with nihilism, understood here as the denial or collapse of authoritative values and meanings. Several associated thinkers diagnose nihilism or ask how it might be overcome; they do not simply endorse the claim that nothing matters. Nor does attention to anxiety, death, or failure necessarily constitute pessimism: describing vulnerability does not establish that life is uniformly bad or that action is futile. Similarly, emphasis on individual responsibility need not imply social atomism, unrestricted self-interest, or indifference to institutions. Beauvoir’s examination of oppression and Sartre’s later analyses of collective action are counterexamples to an exclusively individualistic definition.

The relationship to humanism is equally qualified. Sartre’s 1945 lecture defended a humanism centered on human projects and responsibility, not on a fixed human nature prescribing a universal purpose. Heidegger’s response questioned the metaphysical assumptions of established humanisms rather than offering a rival celebration of individual choice. Religious thinkers associated with existential philosophy, meanwhile, understood human existence through relations to God that Sartre’s atheistic account excluded. Neither atheism nor religious belief, and neither acceptance nor rejection of humanism, supplies a criterion covering the whole tradition.

Earlier sources and nineteenth-century contexts

Later existential thinkers found resources in earlier accounts of self-examination, inwardness, and human limitation, but these affinities do not make their authors members of an existentialist movement. In Plato’s Apology, Socrates presents the examination of oneself and others as central to a worthwhile life; his claim that “the unexamined life is not worth living” occurs during his defense against charges brought in 399 BCE. The relevant inheritance is less a doctrine of individual choice than a practice that makes the question of how to live inseparable from the questioner’s own conduct. Augustine’s Confessions (c. 397–400 CE) likewise investigates the self through memory, desire, divided willing, and time. Its inwardness, however, is addressed to God: self-understanding depends on a relationship with the creator, not on an autonomous subject establishing its own foundation.

Blaise Pascal’s Pensées, published posthumously in 1670 from notes for a defense of Christianity, offered another important precedent. Pascal depicts human beings as caught between greatness and wretchedness: capable of thought, yet physically fragile and unable to secure lasting satisfaction. His image of the human being as a “thinking reed” locates dignity in awareness rather than physical power. His account of divertissement, or diversion, describes how occupations and entertainments prevent people from confronting their mortality and unhappiness. These analyses anticipate later investigations of evasion and finitude, but Pascal’s intended answer remains Christian faith rather than the secular creation of meaning.

The more immediate philosophical background was German idealism, especially the ambition to comprehend reason, freedom, nature, and history within systematic philosophy. G. W. F. Hegel’s Phenomenology of Spirit (1807) treats individual forms of consciousness within a larger account of the development of spirit. Later objections targeted the apparent absorption of the concrete individual into such an intelligible whole. Søren Kierkegaard’s Concluding Unscientific Postscript (1846), for example, distinguishes a logical system from a purported system of existence: the existing thinker remains temporally involved in the life that speculative thought attempts to comprehend. This criticism should not be mistaken for proof that Hegel simply ignored individuality or freedom, both of which are central to his philosophy. The disagreement concerns whether systematic comprehension can adequately express what it means to exist, decide, and become.

Nineteenth-century transformations gave these questions new settings without providing a single explanation for their emergence. Biblical criticism, exemplified by David Friedrich Strauss’s The Life of Jesus (1835–1836), challenged traditional accounts of scriptural authority, while Charles Darwin’s On the Origin of Species (1859) altered debates about humanity’s place in nature. Urbanization, wage labor, expanding print culture, and demands for civil and political rights changed the institutions through which individuality was understood. Secularization was nevertheless uneven: religious renewal accompanied challenges to established churches, and existential questioning developed within Christian as well as nonreligious frameworks. These conditions intensified disputes about responsibility and authority without determining any one philosophical response.

Fyodor Dostoevsky explored such disputes through conflicting fictional voices rather than a unified philosophical system. In Notes from Underground (1864), the unnamed narrator attacks rational egoism—the view that enlightened calculation of self-interest can explain conduct and organize social improvement. Against the confidence associated with Nikolai Chernyshevsky’s What Is to Be Done? (1863), he insists that people may deliberately choose suffering or disadvantage to resist being reduced to predictable mechanisms. His spite and self-humiliation also expose the costs of this assertion of independence. In The Brothers Karamazov (1879–1880), Ivan’s challenge to providential harmony centers on innocent children’s suffering; his “Grand Inquisitor” story asks whether people can bear the freedom offered by Christ. Dmitri’s guilt, Smerdyakov’s actions, and Alyosha’s religious commitments complicate any simple opposition between freedom and faith. The novel distinguishes legal culpability from broader moral responsibility while leaving its competing arguments embedded in relationships and consequences.

Kierkegaard and Nietzsche

Søren Kierkegaard (1813–1855) made the existing individual, rather than an impersonal philosophical system, central to his inquiry. In Concluding Unscientific Postscript (1846), published under the pseudonym Johannes Climacus, he distinguishes knowing propositions from appropriating a truth through one’s manner of living. Its formulation “truth is subjectivity” concerns especially ethical and religious truth: understanding what faith requires is different from becoming a believer. It does not mean that factual claims become true whenever someone sincerely believes them. The emphasis falls on the individual’s passionate commitment under conditions of uncertainty, which theoretical reflection cannot simply remove.

Kierkegaard’s pseudonymous authorship makes this distinction part of his method. Rather than presenting every position as his own doctrine, he constructs voices whose assumptions and limitations readers must assess. Either/Or (1843), ostensibly edited by Victor Eremita, juxtaposes the papers of an unnamed aesthete with letters by Judge William, who defends ethical commitment. The aesthetic mode organizes life around enjoyment, interesting experiences, and the avoidance of binding decisions; it includes reflective manipulation as well as immediate pleasure. The ethical mode involves choosing oneself through enduring responsibilities, exemplified by marriage. These are not merely personality types or steps on an automatic developmental ladder: the reader confronts competing ways of organizing an entire life.

The religious mode cannot simply be reduced to stronger ethical commitment. In Fear and Trembling (1843), the pseudonymous Johannes de silentio examines Abraham’s willingness to sacrifice Isaac and asks whether there can be a “teleological suspension of the ethical.” Abraham’s relation to God appears to place him beyond the universally communicable reasons available to ordinary ethical judgment. The narrator repeatedly acknowledges that he cannot understand Abraham’s faith; the book therefore should not be read as a straightforward authorization to disregard moral obligations. The Postscript further distinguishes forms of religious inwardness and stresses the particular difficulty of Christian faith in the paradox of God’s becoming human. Kierkegaard’s indirect communication seeks to expose existential choices without claiming that an author can make those choices for the reader.

Friedrich Nietzsche (1844–1900), by contrast, investigated the consequences of the declining authority of Christianity and its associated moral framework. In The Gay Science (1882), section 125, a madman announces that “God is dead” and that human beings have killed him. The scene presents this as a cultural event whose implications have scarcely been understood, not merely as an argument against God’s existence. Section 343, added in 1887, describes both the approaching shadows and the new possibilities opened by the collapse of Christian belief. The problem extends beyond explicit religion: inherited accounts of truth, morality, and human purpose may continue to depend on assumptions whose authority has been undermined.

Nietzsche’s diagnosis of nihilism concerns the devaluation of authoritative values and the resulting difficulty of finding goals, rather than a simple recommendation to believe in nothing. His published works examine how prevailing valuations emerged and what forms of life they sustain. On the Genealogy of Morality (1887), for example, investigates ressentiment, guilt, and the ascetic ideal, questioning the value of moral values themselves. Thus Spoke Zarathustra (1883–1885) presents self-overcoming and the creation of values through dramatic speeches and images rather than a systematic moral code. Such creation is not equivalent to arbitrary preference: it involves transforming inherited commitments, organizing conflicting drives, and confronting what one can affirm about existence.

Their religious commitments thus differ fundamentally: Kierkegaard sought to clarify the demands of becoming Christian, while Nietzsche challenged Christianity’s valuation of life. Their later association rests on overlapping concerns with lived commitment, inherited authority, and the inadequacy of detached theoretical understanding. Karl Jaspers’s Nietzsche (1936) and Jean Wahl’s Études kierkegaardiennes (1938) exemplify their twentieth-century philosophical reception. Neither thinker formulated existentialism as a school, and their inclusion as precursors should not erase their disagreements or turn their distinctive literary methods into a shared doctrine.

Phenomenology, Heidegger, and Jaspers

Edmund Husserl’s phenomenology supplied methodological resources for examining experience as it is lived, rather than treating it solely as an effect of physiological or psychological causes. In Logical Investigations (1900–1901), Husserl developed an account of intentionality: perceiving, remembering, judging, and imagining are directed toward something, although their objects need not exist independently of these acts. Description therefore examines both how an object appears and the mode of awareness through which it appears; remembering a house differs from perceiving it, even when the house is the same. In Ideas I (1913), Husserl introduced the phenomenological epoché, suspending the ordinary assumption of the world’s independent existence to investigate how objects acquire meaning and validity in experience. This suspension was not a denial of the world, and phenomenological description was not simply introspection into private mental contents.

Martin Heidegger, who worked closely with Husserl at Freiburg, redirected phenomenology toward the question of the meaning of Being in Being and Time (1927). Its starting point was Dasein, the being for whom its own being is an issue. The term does not designate an isolated mind subsequently connected to an external world. Dasein is already being-in-the-world: involved in meaningful activities, relationships, and possibilities. Heidegger distinguished the question of Being from inquiries into particular beings, including scientific investigations of human organisms. His analysis of Dasein was intended to prepare the question of Being, not to establish a comprehensive anthropology or a doctrine of personal self-expression.

Practical involvement makes this departure from a subject–object model concrete. A hammer ordinarily appears within the activity of building or repairing, connected with nails, materials, purposes, and other people. Heidegger called this mode of encounter “readiness-to-hand,” contrasting it with the “presence-at-hand” of something considered primarily through observable properties. A broken or missing tool can interrupt activity and make the previously unobtrusive network of references conspicuous. The distinction does not imply that theoretical knowledge is false; rather, detached observation is not the sole or most basic way things become intelligible. Heidegger described Dasein’s unified structure as “care,” encompassing its already-given circumstances, projection toward possibilities, and involvement with entities within the world.

Karl Jaspers developed a different existential philosophy in his three-volume Philosophy (1932), organized around philosophical world-orientation, the elucidation of Existenz, and metaphysics. Human existence as an empirical reality—Dasein in his terminology—can be investigated by sciences such as biology, psychology, and sociology. Existenz, by contrast, names possible selfhood that cannot be exhaustively known as an object: it becomes actual through freedom, decision, and relations with other selves. Existential communication is therefore more than exchanging information; it involves reciprocal openness in which neither participant reduces the other to an object. Jaspers’s “boundary situations,” including death, suffering, struggle, and guilt, expose limits that technical knowledge cannot simply remove. They can disrupt everyday assurances and occasion an awareness of possible Existenz and its relation to transcendence, without providing demonstrable knowledge of transcendence as an object.

These projects should not be treated as interchangeable versions of existentialism. Phenomenology is a methodological and philosophical tradition broader than existential thought; Heidegger’s existential analysis investigates structures of Dasein, whereas Jaspers’s elucidation of Existenz addresses possible selfhood without presenting it as an objectively describable entity. In his Letter on Humanism, written in 1946 and first published in 1947, Heidegger explicitly challenged Jean-Paul Sartre’s formulation that existence precedes essence. He argued that reversing the traditional priority of essence over existence remained within the metaphysical framework he sought to question. His own use of “existence,” subsequently emphasized as ek-sistence, concerned the human standing-open to Being, rather than a thesis about individuals producing their essence through choice.

The emergence of French existentialism

French existentialism emerged through overlapping networks of translation, university teaching, and literary exchange rather than through the establishment of a single school. In February 1929, Edmund Husserl delivered lectures at the Sorbonne that became the basis of Cartesian Meditations, published in French in 1931 in a translation by Gabrielle Peiffer and Emmanuel Levinas. Levinas’s The Theory of Intuition in Husserl’s Phenomenology (1930) also introduced French readers to phenomenology as a method for investigating experience. Alexandre Koyré and, especially, Alexandre Kojève helped make Hegel central to Parisian intellectual discussion. Kojève’s seminars at the École pratique des hautes études between 1933 and 1939 attracted participants including Raymond Queneau, Georges Bataille, and Jacques Lacan; their emphasis on desire, recognition, and historical action contributed to an intellectual setting broader than existentialism itself.

Jean-Paul Sartre encountered these developments through both personal contacts and study. Raymond Aron drew his attention to phenomenology, and Sartre spent the academic year 1933–1934 at the French Institute in Berlin studying Husserl and German philosophy. His subsequent writings developed an account of consciousness through descriptions of imagination, emotion, and everyday experience. The Transcendence of the Ego, published in 1936–1937, challenged the treatment of the ego as an inhabitant of consciousness; Sketch for a Theory of the Emotions followed in 1939. These studies supplied part of the background to Being and Nothingness (1943), subtitled “An Essay in Phenomenological Ontology.” Drawing critically on Husserl and Heidegger, that book examined consciousness, freedom, embodiment, and relations with others without yet providing the accessible public manifesto later associated with the movement.

The German occupation of France formed the immediate setting for much of this work. Sartre published Being and Nothingness and staged The Flies in 1943; No Exit followed in 1944. Simone de Beauvoir published She Came to Stay in 1943 and the philosophical essay Pyrrhus and Cineas in 1944. The novel explored freedom and interpersonal conflict through a triangular relationship, while the essay investigated action, purposes, and the dependence of individual projects on other people. These publications placed philosophical inquiry within literary and theatrical culture rather than restricting it to academic argument. Their appearance under occupation should not, however, be treated as evidence that the works expressed one uniform political message or that existentialism already constituted an organized movement.

After the Liberation, publishing and journalism transformed this intellectual network into a highly visible public presence. The first issue of Les Temps modernes appeared in October 1945 under Sartre’s direction, with an initial editorial committee that included Beauvoir, Maurice Merleau-Ponty, and Aron. Sartre’s opening presentation defended the historically situated responsibility of writers. The journal brought literary works, political reporting, and philosophical argument into a common forum. Gallimard’s publications, newspaper coverage, theatrical performances, and the cafés of Saint-Germain-des-Prés helped extend the audience beyond universities. This publicity also encouraged the loose identification of existentialism with a Parisian lifestyle, obscuring differences among philosophers and writers grouped under the label.

Sartre’s lecture of 29 October 1945, organized by the Club Maintenant at the Salle des Centraux in Paris, was decisive in this popularization. Published by Nagel in 1946 as Existentialism Is a Humanism, it answered objections that existentialism promoted despair, passivity, or moral arbitrariness. Sartre presented “existence precedes essence” as the starting point of his atheistic position and emphasized choice, responsibility, and the implications of individual action for an image of humanity. Its direct language made it an influential introduction, but its defensive purpose and compressed arguments distinguish it from Being and Nothingness. Its separation of Christian and atheistic existentialists also acknowledged a diversity that Sartre’s own public prominence could conceal.

Religious and nonreligious approaches

Gabriel Marcel distinguished a problem, which can be placed before an investigator and addressed through appropriate techniques, from a mystery, in which the questioner is personally implicated. Developed in Being and Having (1935) and The Mystery of Being (1951), this distinction did not identify mystery with an unexplained fact awaiting a scientific solution. Questions concerning being, embodiment, love, and fidelity involve participation in a reality that cannot be adequately understood as an external object. Marcel called the receptive presence offered to another person disponibilité, usually translated as “availability”: a willingness to respond rather than treat the other as a function or possession. “Creative fidelity” sustains such presence through changing circumstances rather than merely repeating an earlier promise. In Homo Viator (1944), hope similarly differs from predicting a favorable outcome; it expresses trust that a present ordeal does not exhaust the possibilities of existence. Marcel’s conversion to Catholicism in 1929 supplied a Christian setting for these ideas, but his philosophical method proceeded through reflection on concrete experience rather than deduction from doctrine.

Nikolai Berdyaev developed a religious personalism rooted in Russian Orthodox Christianity, while criticizing religious authoritarianism and rejecting the reduction of persons to either social functions or objects of knowledge. In The Meaning of the Creative Act (1916) and The Destiny of Man (1931), personality is a spiritual vocation realized through freedom, creativity, and communion, not simply an empirical individual with identifiable characteristics. Drawing on the German mystic Jakob Böhme’s account of the Ungrund, or groundlessness, Berdyaev described primordial freedom as uncreated and not determined by God. This controversial formulation distinguished his position from standard Christian accounts of creation: it was intended to preserve the radical character of freedom without making God the cause of evil. Human creativity, accordingly, was not merely the rearrangement of existing materials but a free response to a divine calling. His Christian existential philosophy should therefore not be treated as representative of Orthodox theology generally.

Paul Tillich incorporated existential analysis into Protestant systematic theology through his “method of correlation.” In Systematic Theology (three volumes, 1951–1963), analysis of the human situation formulates questions to which Christian symbols provide answers; neither philosophical questioning nor theological proclamation simply replaces the other. The Courage to Be (1952) distinguished anxieties concerning fate and death, guilt and condemnation, and emptiness and meaninglessness. Courage means self-affirmation despite the threat of nonbeing, not the elimination of anxiety. Tillich’s description of God as being-itself or the ground of being also resisted conceiving God as one entity alongside other entities. His use of existential categories thus served a theological account of estrangement and reconciliation rather than adherence to a single existentialist school.

Rudolf Bultmann likewise appropriated existential concepts for specifically theological purposes. His 1941 essay “New Testament and Mythology” proposed demythologization: interpreting the New Testament’s mythological language so that its proclamation could be understood without requiring acceptance of an ancient cosmology. Influenced by Heidegger’s analysis of existence, Bultmann interpreted faith in terms of a transformed self-understanding, release from reliance on worldly securities, and openness to the future. This was not intended to reduce Christianity to a general philosophy of authentic living. For Bultmann, faith answers a divine address encountered in proclamation; philosophical analysis can clarify human existence but cannot itself produce that event.

Jean-Paul Sartre offered a contrasting atheistic framework. In his 1945 lecture, published as Existentialism Is a Humanism in 1946, the absence of a divine creator means that no divinely conceived human essence or prescribed hierarchy of values determines human purposes. His technical use of “transcendence” concerns consciousness’s movement beyond what is given toward possibilities, not necessarily a relation to God. Religious thinkers instead understand human self-surpassing through participation, divine encounter, or a ground of being. These differences concern the interpretation of existence, not whether existence merits investigation: attention to freedom, finitude, and responsibility does not by itself establish either belief or unbelief.

Existence, essence, and the self

For Jean-Paul Sartre, “existence precedes essence” means that human beings are not produced according to a prior definition that determines what they ought to become. In his October 1945 lecture, published as Existentialism Is a Humanism in 1946, Sartre contrasts a person with a manufactured object such as a paper knife: the artisan possesses a conception of the object and its purpose before making it. His atheistic argument rejects the corresponding picture of God as an artisan who creates humanity according to a preconceived human nature. A person first exists and subsequently acquires a determinate character through living and acting. This does not mean that people lack bodies, histories, or shared characteristics; it denies that these supply a predetermined purpose or a complete prescription for an individual life.

The ontological background appears in Sartre’s *Being and Nothingness* (1943), which distinguishes being-in-itself (être-en-soi) from being-for-itself (être-pour-soi). Being-in-itself is being considered as fully coincident with itself: it does not take a position on what it is or entertain possibilities of becoming otherwise. Being-for-itself is the mode of being of consciousness, which is always directed beyond itself toward something. Consciousness does not coincide with its own identity in the manner of a thing. A person who reflects on being a teacher, for example, can make that identity an object of consideration, assess its demands, and envisage another way of living. Sartre’s distinction is not between two substances, mind and matter, but between different modes of being.

“Nothingness” names an essential feature of this noncoincidence rather than a separate entity or a claim that nothing exists. Consciousness introduces negation into its encounter with the world: it distinguishes what is present from what is absent, actual from possible, and itself from its objects. Sartre illustrates this through the search for Pierre in a café. Against the expectation of meeting him, Pierre’s absence organizes the perception of the room; the café appears as the place where Pierre is not. Likewise, consciousness can apprehend its present condition in relation to a possibility that is not yet actual. Its distance from what is given makes questioning, refusal, and projects intelligible.

The self is consequently an ongoing project rather than a finished substance concealed behind experience. Sartre’s analysis of temporality treats past, present, and future as interconnected dimensions of existence, not merely a succession of discrete moments. The past is irrevocable: previous actions and commitments belong to a person’s situation. Yet their significance is taken up through present activity and future aims. An earlier commitment to a profession may be continued as a vocation, reconsidered as a mistake, or incorporated into a different undertaking. Reinterpretation does not erase what happened. Nor is a project simply a consciously announced plan: it is an orientation toward possibilities expressed across conduct. Sartre therefore resists both a fixed character that mechanically produces actions and an account of the person as disconnected momentary choices.

This formulation should not be treated as a proposition shared unchanged by every thinker associated with existentialism. Søren Kierkegaard emphasizes becoming a self, but understands selfhood through a relation ultimately grounded in God, not through Sartre’s atheistic rejection of a divine conception. Martin Heidegger writes in Being and Time (1927) that the “essence” of Dasein lies in its existence, but this concerns the distinctive being of the entity for whom Being is an issue. In his Letter on Humanism, written in 1946, he explicitly rejects Sartre’s reversal of essence and existence as remaining within the metaphysical framework he seeks to question. Similar terminology thus conceals substantive differences about selfhood, transcendence, and the task of philosophy.

Freedom, facticity, and situation

In Jean-Paul Sartre’s Being and Nothingness (1943), facticity names the given dimensions of existence that freedom does not simply create: the body, birthplace, past actions, relations with other people, and historical circumstances. A person cannot choose never to have been born, erase an earlier commitment, or make bodily limitations disappear by decision. Yet these facts do not constitute a complete definition of what that person must become. The past is irreversible, but its significance for present action remains open: an earlier failure may be taken up as a reason to abandon a project, revise it, or pursue it differently. This openness does not alter what happened.

Sartre calls the movement beyond what is given toward possibilities transcendence. Here the term does not mean passage into a supernatural realm; it describes consciousness’s orientation toward what is not yet actual. Facticity and transcendence are inseparable aspects of a situation. A rocky slope, for example, presents resistance differently to someone attempting to climb it and to someone merely observing the landscape. The project discloses the rock as an obstacle; it does not invent the rock’s physical properties or guarantee that climbing is possible. Accordingly, Sartre’s freedom is neither action without circumstances nor the claim that circumstances are imaginary. A situation consists of conditions encountered through projects, while those projects must contend with conditions they cannot simply abolish.

This account requires distinguishing ontological freedom from effective freedom: the structure of projecting possibilities is not identical with the practical capacity to realize them. Sartre explicitly distinguishes being free to choose from obtaining what one has chosen. His example of a prisoner makes the point sharply: imprisonment does not eliminate every project, but a decision to escape does not open the prison door. Resources, institutions, bodily capacities, and other people’s actions determine which undertakings can succeed. Even where an attitude toward confinement remains possible, it is not equivalent to freedom of movement. The distinction therefore cannot establish that people under coercion possess the same opportunities as those who are not coerced.

Responsibility follows, for Sartre, because circumstances do not by themselves supply the purposes through which a person acts. In his 1945 lecture, published as Existentialism Is a Humanism in 1946, he describes the human being as “condemned to be free”: existence is not initially chosen, yet action continually involves taking up that existence without a predetermined moral script. His rejection of determinist excuses targets appeals to character, passion, or social position as forces that supposedly settle conduct in advance. In Being and Nothingness, this becomes a deliberately radical account of responsibility for assuming one’s situation through projects. Such responsibility must be distinguished from having caused every circumstance encountered, and from legal culpability for events beyond one’s control.

Other existential thinkers give finitude and constraint different emphases. In Being and Time (1927), Martin Heidegger joins projection to thrownness: possibilities are always disclosed from within an already inherited world, not selected by a self standing outside it. Simone de Beauvoir’s The Ethics of Ambiguity (1947) distinguishes the freedom involved in existence from the concrete possibilities through which it can be exercised, emphasizing how oppression restricts those possibilities. These differences concern more than terminology: they determine how far responsibility can be attributed to an individual when dependence, coercion, or deprivation sharply limits action.

Authenticity, bad faith, and everyday conformity

In Being and Nothingness (1943), Jean-Paul Sartre describes bad faith (mauvaise foi) as a form of self-deception concerning the relation between facticity—the circumstances and determinate features of a life—and transcendence, the capacity to project possibilities beyond what is already given. Unlike an ordinary lie, bad faith does not simply involve one person concealing information from another. Consciousness evades something it also apprehends, sustaining an unstable interpretation of itself. It may treat a social identity or past action as an immutable essence, or invoke its openness to future possibilities to evade the significance of what it has actually done.

Sartre’s café waiter exemplifies the first tendency. His movements are excessively precise and eager: he bends forward too readily, balances his tray with exaggerated assurance, and performs the recognizable gestures of his occupation. Sartre describes him as playing at being a waiter, attempting to exist as a waiter in the fixed way that an object is what it is. The problem is not that professional competence or courteous service is inherently deceptive. It is the attempt to make a role exhaust one’s being, obscuring the distinction between having an occupation and being wholly defined by it. Conversely, simply denying that the occupation and its obligations have any bearing on one’s life would evade facticity rather than acknowledge freedom.

Sartre therefore distinguishes authenticity from sincerity understood as the demand to be exactly what one is. Because a person is not a finished thing, the project of perfectly coinciding with an established identity can itself reproduce bad faith. His discussion of sincerity examines how demands for confession or self-definition can turn a person’s conduct into an allegedly exhaustive essence. Authenticity cannot consequently mean uncovering an unchanging inner self, nor does a spontaneous feeling automatically reveal an authoritative identity. Feelings, dispositions, and previous commitments belong to a situation whose meaning remains implicated in ongoing projects.

In Being and Time (1927), Martin Heidegger analyzes everyday conformity through das Man, conventionally translated as “the they” or “the one.” This is not a particular group manipulating otherwise independent individuals. It names the anonymous standards through which people ordinarily understand what one does, enjoys, or regards as important. Public interpretation supplies intelligibility while also “leveling down” possibilities and relieving individuals of taking responsibility for their own understanding. Everyday absorption in tasks and shared practices is nevertheless constitutive of being-in-the-world, not simply a moral defect that could be eliminated by leaving society.

Heidegger’s authenticity (Eigentlichkeit) is a modification of this shared existence rather than an escape from it. The call of conscience interrupts absorption in public interpretations and summons the individual to own possibilities that nobody else can assume on that individual’s behalf. Resoluteness means taking up one’s concrete situation, not displaying eccentricity or selecting whatever contradicts convention. Heidegger explicitly presents authentic selfhood as a modification of the “they,” and his account allows for a transformed involvement with others rather than requiring isolation.

Whether authenticity constitutes an ethical ideal remains disputed. Heidegger distinguishes the existential analysis of authenticity and inauthenticity from moral rankings of good and bad lives; it does not supply substantive rules for action. Nevertheless, the contrast between owning possibilities and evading them has prompted ethical interpretations. Sartre’s descriptions likewise expose evasions of responsibility without establishing a complete morality: Being and Nothingness reserves the ethical implications of its ontology for further investigation. Authenticity thus concerns how a person relates to freedom, circumstances, and commitments, but that account alone does not settle which commitments are justifiable.

Anxiety, finitude, and existential disclosure

In existential philosophy, anxiety or dread names an experience in which ordinary ways of understanding oneself and the world become unsettled. Unlike fear, which typically concerns a determinate threat—a dangerous animal, an approaching attack—philosophical anxiety need not have a particular threatening object. Its significance lies in what it reveals about possibility, dependence, and the absence of ultimate guarantees. This distinction is conceptual rather than diagnostic: existential anxiety is not synonymous with a clinically defined anxiety disorder, and philosophical descriptions neither establish a diagnosis nor explain the causes of psychiatric conditions. Nor does anxiety function simply as evidence that life is meaningless; different thinkers interpret its disclosure within markedly different religious and philosophical frameworks.

In The Concept of Anxiety (1844), published under the pseudonym Vigilius Haufniensis, Søren Kierkegaard connects anxiety with freedom and the possibility of acting. His description of anxiety as the “dizziness of freedom” captures the unsettling experience of confronting what one can do without being compelled to do it. The image of looking into an abyss illustrates this double structure: dizziness concerns both the depth below and the possibility of throwing oneself into it. Within the book’s Christian examination of hereditary sin, anxiety helps articulate how innocence differs from an absence of possibilities. The prohibition addressed to Adam awakens the possibility of being able, although he does not yet understand good and evil. Anxiety does not causally necessitate sin: the transition into guilt involves a qualitative leap that psychological explanation cannot turn into an inevitable process. Kierkegaard therefore treats anxiety as bound up with freedom, not merely as an unpleasant sensation to be eliminated.

In Being and Time (1927), especially §40, Martin Heidegger distinguishes anxiety (Angst) from fear through its relation to being-in-the-world. In anxiety, familiar things remain present, but the network of practical significance through which they ordinarily matter loses its unquestioned hold. No particular entity within the world adequately explains the disturbance. Anxiety thus discloses being-in-the-world itself and exposes the uncanniness of existence: the person is no longer simply “at home” in everyday involvements. It also loosens absorption in publicly accepted interpretations of how one should live. This individualization does not establish an isolated subject existing outside a world; it reveals an existence already situated in a world, yet required to take up possibilities that customary expectations cannot finally settle.

Heidegger’s account of being-toward-death, developed in §§46–53, gives finitude a similarly structural meaning. Death is not treated only as a biological event or a future occurrence about which information can be collected. It is the possibility of the impossibility of further existence: a possibility that is one’s own, cannot be taken over by another, and cannot ultimately be surpassed. Its certainty coexists with uncertainty about when it will occur. Anticipation means understanding present possibilities as finite, not repeatedly imagining the circumstances of dying. Although someone can die for another, nobody can remove that other person’s mortality. This non-substitutability helps explain death’s individualizing significance without implying that social relationships cease to matter.

Contingency and estrangement provide related, but distinct, occasions of disclosure. In Jean-Paul Sartre’s Nausea (1938), Antoine Roquentin’s encounter with a chestnut-tree root strips away familiar names and practical classifications: existence appears as gratuitous, without a necessary reason for being there. This literary presentation differs from both Kierkegaard’s account of freedom before sin and Heidegger’s analysis of anxiety. Their shared concern is how a disruption of everyday familiarity can expose features of existence concealed by routine explanation, rather than merely introduce an unusual private feeling.

Embodiment, other people, and the shared world

In Being and Nothingness (1943), Jean-Paul Sartre analyzes the “look” as an encounter in which another subject discloses a dimension of existence that the individual cannot control: being-for-others. His example is someone absorbed in looking through a keyhole who suddenly hears footsteps. Before this interruption, attention is directed toward the scene beyond the door; with the apparent arrival of another person, the observer experiences being seen as a voyeur. Shame here is not simply a judgment that a rule has been broken. It is an immediate recognition of oneself as an object for another freedom. The look need not involve visibly observing another person’s eyes: footsteps can suffice, and the anticipated observer may not actually be present. Its significance lies in the transformation of the experienced situation.

This analysis makes embodiment more than the possession of a physical object. Sartre distinguishes the body as lived in practical activity, the body as encountered by others, and the experience of one’s body as known by another. While reaching for something, the body ordinarily functions as an unthematized orientation toward a task; under another’s scrutiny, its gestures may become awkward or conspicuous. Interpersonal conflict arises because each person is both a subject who organizes a world and someone whom another subject can objectify. Sartre’s analyses of love, desire, and shame examine attempts to secure recognition while controlling the other person’s freedom—attempts that undermine themselves because recognition matters precisely as the response of someone free. This account does not mean that every encounter is an explicit quarrel, but it gives conflict a structural place in being-for-others.

Maurice Merleau-Ponty offers a different emphasis in Phenomenology of Perception (1945). Closely associated with French existentialism, he developed a distinctive phenomenological philosophy rather than simply adopting Sartre’s ontology. His “lived body” is neither a machine directed by an internal spectator nor merely an object described from outside. It is the subject’s practical access to a world. Bodily intentionality operates as an “I can” before it becomes an explicit “I think”: walking through a doorway or reaching for a cup ordinarily requires neither geometrical calculation nor a mental representation of every movement. His discussions of habit include a blind person’s cane, which can cease to be primarily an object felt in the hand and become a means through which the surroundings are perceived.

For Merleau-Ponty, other people are encountered through expressive bodily conduct, not first inferred as hidden minds behind moving bodies. Anger, for example, is perceived in gestures and comportment rather than reconstructed solely from physiological signs. Language extends this expressive relation: speech does not merely transmit thoughts already complete in private consciousness but can bring meaning into articulation. In dialogue, speakers participate in an unfolding exchange whose direction neither determines alone. This emphasis on coexistence contrasts with Sartre’s conflict-centered descriptions without eliminating disagreement or the irreducibility of another person’s perspective. Gabriel Marcel likewise emphasizes encounter, especially availability and fidelity, treating another person as a “thou” rather than merely a case to classify or a resource to use.

These approaches complicate the interpretation of existentialism as exclusively isolated individualism. Bodily vulnerability exposes people to others’ assistance, scrutiny, and intervention; learned gestures, language, and shared practices make individual projects intelligible in the first place. Even Sartre’s shame presupposes another subject whose perspective cannot be reduced to one’s own. Merleau-Ponty’s account places this social dimension within perception and action themselves: people inhabit a common world through bodily capacities and inherited meanings, while experiencing it from perspectives that never become wholly interchangeable.

Ethics, ambiguity, and feminist philosophy

In The Ethics of Ambiguity (1947), Simone de Beauvoir treats ambiguity as a constitutive feature of human existence, not as indecision or uncertainty about moral rules. Human beings are embodied objects within a world they do not control, yet also subjects who interpret that world and project possibilities beyond their present circumstances. They are both separate from others and dependent on them, both capable of initiating projects and exposed to failure and death. Ethical failure arises when one attempts to eliminate these tensions: the “serious man,” for example, treats values as unquestionable external absolutes, concealing the human choices that sustain them. Beauvoir’s alternative is to assume freedom without imagining that it confers unlimited power or exemption from responsibility.

Her central ethical claim is that willing one’s own freedom requires willing the freedom of others. Freedom here means more than the unavoidable capacity to take a stance: it also concerns the concrete possibility of pursuing projects in a shared world. Other people are not merely obstacles or instruments, because their independent activities help sustain the open future in which projects acquire significance. Consequently, recognizing oneself as a source of value while systematically denying others that standing is ethically inconsistent. This argument does not produce a complete code of duties or an algorithm for resolving conflicts. Action remains situated, its consequences uncertain, and competing freedoms can collide. Beauvoir therefore examines oppression, resistance, and the risks of violence without claiming that an appeal to freedom automatically makes every difficult decision unambiguous.

The Second Sex (1949) develops these concerns through an analysis foundational to modern feminist philosophy. Its account of woman as “Other” concerns an asymmetrical social relation: man is established as the neutral or universal human subject, while woman is defined relative to him. Beauvoir investigates how biological descriptions, psychoanalytic theories, historical institutions, literature, and myths contribute to this arrangement. Her statement that one is not born but becomes a woman distinguishes bodily existence from the social processes through which femininity is constituted. It does not imply that bodies are unreal or that becoming is simply an individual choice. Rather, bodily differences acquire meaning within historically organized practices, expectations, and distributions of power.

The distinction between immanence and transcendence connects this analysis to Beauvoir’s ethics. Transcendence names the movement beyond an established situation through projects; immanence refers to enclosure within repetition and the maintenance of what already exists. Neither term simply designates a biological sex. Beauvoir’s criticism concerns social arrangements that reserve publicly recognized projects disproportionately for men while confining women to repetitive domestic and reproductive functions. Economic dependence, unequal education, restricted employment, and marriage institutions shape which possibilities are practically available. Accommodation to these conditions cannot therefore be explained merely as a freely chosen refusal of freedom. Her discussions distinguish complicity from constraints that make resistance costly or opportunities inaccessible; emancipation requires changes in material and social conditions, not only a change of attitude.

These arguments also expose a disputed transition within existential ethics: a description of human beings as free does not by itself establish an obligation to respect or promote everyone’s freedom. Beauvoir supplies an additional ethical argument about acknowledging the conditions of one’s own projects and the standing of other subjects, but whether this establishes reciprocity as binding remains an interpretive question. Associated thinkers offer different resources rather than one shared doctrine. Jean-Paul Sartre’s 1946 Existentialism Is a Humanism connects individual choice with responsibility for an image of humanity; religious existential approaches locate obligation in relations to God or the neighbor. Beauvoir’s distinctive contribution is to make the unequal social conditions under which freedom is exercised central to ethical inquiry itself.

Engagement, history, and political thought

For Jean-Paul Sartre, intellectual engagement (engagement) meant acknowledging that writing and public silence alike occur within situations whose consequences the writer cannot simply disown. In the presentation of Les Temps modernes in 1945 and in What Is Literature? (1947), he connected prose writing with disclosure: naming a social condition makes it available for recognition, judgment, and possible change. Prose addresses readers as free agents rather than merely transmitting information. This did not require reducing literature to party propaganda; it did challenge claims that literary activity could remain innocent of its historical circumstances. Sartre’s interventions against French colonial rule, including his signature on the 1960 “Manifesto of the 121” concerning insubordination in the Algerian War, exemplified engagement beyond literary production.

Search for a Method (1957), subsequently incorporated into Critique of Dialectical Reason (1960), sought to connect the individual project with the historical analysis developed from Karl Marx. Sartre opposed explanations that treated a person as the automatic expression of a class position, while also rejecting accounts of choice detached from material conditions. His “progressive-regressive” method moved between an individual’s projects and the familial, economic, and historical circumstances through which those projects became possible. His discussion of Gustave Flaubert illustrated the problem: identifying an author as bourgeois does not explain why this particular bourgeois became this particular writer. Individual praxis—purposive activity that transforms a situation—had to be understood through its social mediations without being dissolved into them.

The first volume of Critique of Dialectical Reason, published in 1960, examined how such activity produces structures that subsequently constrain its makers. Sartre called this field the practico-inert: accumulated human activity embodied in objects, arrangements, and institutions that confront later agents as apparently external necessities. Scarcity supplied a material setting in which people could encounter one another as competitors or threats; it was a historical condition of the social relations Sartre examined, not a timeless moral defect. “Seriality” described a form of coexistence organized externally rather than through a shared undertaking. His example of people waiting for a bus showed individuals joined by the same transport system while remaining largely interchangeable and separate.

Collective action could interrupt this serial separation. Sartre’s “group-in-fusion,” illustrated through the storming of the Bastille in 1789, emerged when individuals responded to a common danger through reciprocal action. Each participant acted with others toward a shared objective rather than merely occupying a place in an externally organized series. Yet this unity was unstable: pledges, assigned functions, and institutions could preserve collective achievements while introducing coercion and hierarchy. His analysis of “fraternity-terror” identified how maintaining solidarity could become bound up with threats against defection. The account therefore investigated both collective emancipation and the possibility that organized freedom would produce new forms of domination.

The Sartre–Camus rupture made disagreements about historical action explicit. In The Rebel (1951), Camus argued that revolt disclosed a shared human limit and criticized revolutionary doctrines that justified present murder through an allegedly necessary future reconciliation. Francis Jeanson’s critical review appeared in Les Temps modernes in May 1952; Camus’s letter to its editor and replies by Sartre and Jeanson followed in August. Camus objected to subordinating moral limits to historical success and stressed revolutionary repression, including Soviet camps. Sartre challenged what he regarded as Camus’s abstract moral standpoint and inadequate attention to concrete political struggles; he did not dispute the existence of the camps. Their disagreement concerned how resistance to oppression could retain limits while acting within conflicts where abstention, alliance, and violence all had consequences, rather than a simple opposition between political commitment and its rejection.

Camus, the absurd, and revolt

In Albert Camus’s The Myth of Sisyphus (1942), the absurd arises from a confrontation: human beings seek unity, intelligibility, and a justification for their existence, while the world supplies no answer commensurate with that demand. It is therefore neither a property of the world considered alone nor simply a feeling within an individual. Everyday routines, the passage of time, and awareness of death can make this discrepancy apparent. To say that everything is meaningless obscures Camus’s argument: the absurd depends on sustaining both the human demand and the world’s resistance to it, rather than eliminating either side.

Camus begins by asking whether recognition of the absurd requires suicide, but rejects that conclusion because it abolishes the conscious person through whom the confrontation exists. He also criticizes “philosophical suicide”: intellectual moves that acknowledge the limits of reason and then turn those limits into grounds for religious faith or metaphysical reassurance. His discussions of Kierkegaard, Jaspers, and Husserl question whether their respective responses preserve the tension they initially disclose. “Living without appeal” means declining an ultimate justification beyond experience while remaining lucid about what cannot be established. It does not require withdrawal from life. Camus identifies revolt, freedom, and passion as consequences of this stance, exploring them through figures such as the actor, the lover, and the creator. His concluding treatment of Sisyphus locates defiance in the hero’s consciousness of his endless task, not in an expectation that the task will eventually be redeemed.

This argument differs from Jean-Paul Sartre’s ontology of consciousness, nothingness, and freedom. Camus does not derive the absurd from the distinction between being-in-itself and being-for-itself, nor does he offer an equivalent systematic account of human existence. His essay investigates how to live when ultimate justification is unavailable. Its emphasis on lucidity also qualifies its language of freedom: release from dependence on a final purpose does not establish unlimited practical power or erase mortality. The absurd remains a tension to be maintained rather than a contradiction resolved through a comprehensive philosophical system.

The Rebel (1951) shifts the inquiry from an individual’s confrontation with existence toward the grounds and limits of collective action. Rebellion begins when someone refuses an intolerable demand, but this refusal also affirms that something deserves protection. Camus argues that the value disclosed through this protest reaches beyond the isolated individual: resistance to humiliation implies a dignity shared with others. His formula “I rebel—therefore we exist” expresses this movement toward solidarity. Revolt becomes self-defeating when it authorizes unrestricted domination or murder in the name of a future reconciliation. Against the sacrifice of present persons to an allegedly final historical end, Camus develops an account of limits and measure. This does not make every difficult political choice disappear; it denies that history can supply an unconditional justification for violence.

Camus explicitly resisted classification as an existentialist, including in a 1945 interview with Les Nouvelles littéraires. Nevertheless, his association with the movement has substantial historical grounds: his wartime publications, his friendship and subsequent public disagreement with Sartre, and his participation in overlapping French literary and intellectual networks. The Myth of Sisyphus and The Stranger, both published in 1942, also addressed estrangement, death, and the absence of transcendent guarantees—questions prominent in contemporary existential philosophy. These connections explain his place beside existentialist writers without making his account of the absurd interchangeable with Sartre’s philosophy or overriding his rejection of the label.

Literary forms, theatre, and cinema

For existentialist writers, narrative and theatre could investigate existence through forms unavailable to abstract exposition alone. A novel can disclose the difference between a character’s self-description and conduct; a play can place incompatible projects within a situation from which no participant possesses a complete perspective. Temporality, bodily sensation, uncertainty, and encounters with others thereby become features of the reader’s or spectator’s experience, not merely topics of discussion. In “Literature and Metaphysics” (1946), Simone de Beauvoir defended the metaphysical novel as a disclosure of existence in its concrete ambiguity. This approach does not make fiction a philosophical treatise in disguise: narrative perspectives can remain partial, and characters’ assertions need not express their authors’ conclusions.

Jean-Paul Sartre’s Nausea (1938) takes the form of Antoine Roquentin’s diary. Its celebrated encounter with a chestnut-tree root presents contingency through a disturbance of perception: familiar names and practical classifications cease to conceal the brute, unjustified presence of things. Roquentin’s abandoned historical biography and his response to a jazz recording also raise questions about whether narrative or art can give necessity to an otherwise contingent life. No Exit, first performed in 1944, instead constructs an interpersonal experiment. Three dead characters—Garcin, Inès, and Estelle—occupy a room without mirrors, where each seeks confirmation from others whose judgments cannot be controlled. The absence of physical torture makes their dependence on one another the mechanism of punishment. “Hell is other people” thus belongs to a specific dramatic configuration of objectification and dependence, rather than establishing that every human relationship is necessarily intolerable.

Beauvoir’s She Came to Stay (1943) examines the unstable relations among Françoise, Pierre, and Xavière, testing efforts to combine freedom, possession, and recognition. Its movement toward violence exposes the difficulty of accepting another consciousness as irreducible to one’s own project; the ending is not a straightforward ethical prescription. In Albert Camus’s The Stranger (1942), Meursault’s restricted first-person narration separates sensory experience from the explanatory conventions expected by other characters. His trial makes his conduct at his mother’s funeral bear upon the judgment of his killing of an unnamed Arab man. The Plague (1947), set in Oran, shifts toward collective suffering and practical solidarity through the activities of Rieux, Tarrou, and others. Its delayed identification of the narrator also makes testimony and the limits of knowledge part of its form. Neither novel’s philosophical significance can be reduced to treating its protagonist as Camus’s spokesman.

Franz Kafka’s association with existentialism is retrospective rather than evidence of membership in the French movement. The Trial (published posthumously in 1925) and The Castle (1926) depict protagonists confronting inaccessible authorities and procedures whose governing terms remain obscure. These situations invited readings concerned with estrangement, guilt, and unintelligibility. Camus explicitly discussed Kafka in “Hope and the Absurd in the Work of Franz Kafka,” distinguishing Kafka’s possible openings toward hope from his own account of living without appeal. Kafka’s fiction nevertheless supports theological, bureaucratic, and other interpretations that exceed an existentialist classification.

Existentialist drama also overlaps with, but is not identical to, the Theatre of the Absurd, the critical category consolidated by Martin Esslin’s 1961 book. Sartre’s plays generally retain intelligible conflicts, consequential decisions, and sustained argumentative dialogue. Samuel Beckett’s Waiting for Godot, first staged in 1953, instead frustrates expectations of purposeful action through repetition, uncertain information, and waiting without resolution. Such formal differences matter even where both kinds of theatre address vulnerability and the absence of secure justification.

In cinema, Ingmar Bergman’s The Seventh Seal (1957) stages questions of mortality and divine silence through the knight Antonius Block’s chess game with Death during a plague. His search for certainty contrasts with the precarious everyday life of the travelling performers Jof and Mia. The film developed from Bergman’s one-act play Wood Painting and draws upon medieval religious imagery. Its existential affinities are therefore best identified through its dramatic questions, rather than treated as proof that it adapts Sartre’s philosophy or belongs to a unified existentialist cinematic school.

Existential psychology and psychotherapy

Existential approaches to psychiatry developed partly through dissatisfaction with accounts that treated patients exclusively as biological mechanisms or collections of psychological drives. The Swiss psychiatrist Ludwig Binswanger drew on phenomenology and Martin Heidegger’s Being and Time (1927) to investigate how a person inhabits a meaningful world. His Grundformen und Erkenntnis menschlichen Daseins (1942) extended this approach to interpersonal existence, especially love. In his clinical writings, disturbances were examined as transformations of lived space, time, embodiment, and relationships, rather than solely as isolated symptoms. Binswanger’s “existential analysis,” or Daseinsanalyse, nevertheless departed from Heidegger’s philosophical project by developing an account of human existence for psychiatric understanding.

Medard Boss, another Swiss psychiatrist with psychoanalytic training, developed a distinct form of Daseinsanalysis through sustained collaboration with Heidegger. The Zollikon seminars, held between 1959 and 1969, brought Heidegger into discussion with physicians and psychiatrists about scientific explanation, bodily existence, and the therapeutic encounter. Boss questioned explanations that reconstructed experience through hypothetical psychic mechanisms, emphasizing instead how phenomena become manifest within a person’s world. His approach understood psychological difficulties in relation to restricted possibilities of existing and relating. Although both psychiatrists adapted Heidegger, their clinical projects should not be treated as interchangeable: Heidegger criticized aspects of Binswanger’s interpretation while working closely with Boss.

Viktor Frankl’s logotherapy emerged from a different intellectual and clinical setting in Vienna. It placed the search for meaning—the “will to meaning”—at the center of its account of motivation, rather than treating meaning as merely derivative of pleasure or power. Frankl developed its foundations before his imprisonment in Nazi concentration camps; his account of those experiences appeared in German in 1946 and subsequently became widely known in English as Man’s Search for Meaning. He distinguished meaning realized through creative activity, experience or encounter, and one’s stance toward unavoidable suffering. His framework combined responsibility with an emphasis on self-transcendence: human existence points beyond itself toward tasks and other people. Unlike Sartre’s atheistic account of value and choice, Frankl described meaning as something to be discovered in concrete situations, not simply invented by an unconstrained subject.

In the United States, Rollo May helped introduce European existential psychiatry into psychology and psychotherapy. Existence: A New Dimension in Psychiatry and Psychology (1958), edited by May, Ernest Angel, and Henri F. Ellenberger, made European clinical and theoretical writings available to an English-speaking readership. May’s The Meaning of Anxiety (1950) had already connected psychological research with Kierkegaard’s interpretation of anxiety. His later work explored freedom, responsibility, creativity, and interpersonal encounter without reducing existential therapy to a standardized sequence of techniques.

Irvin D. Yalom systematized an influential American formulation in Existential Psychotherapy (1980), organized around four “ultimate concerns”: death, freedom, existential isolation, and meaninglessness. Here freedom includes responsibility and the absence of an ultimately guaranteed structure for life; existential isolation denotes a separation that relationships cannot entirely abolish, rather than simply social loneliness. Such concepts became ways of interpreting therapeutic concerns and relationships, not diagnostic categories equivalent to those in psychiatric classification.

These approaches constitute a heterogeneous clinical tradition rather than one uniformly specified treatment. Philosophical arguments about mortality or meaning do not themselves establish therapeutic effectiveness. Empirical evaluation requires defined interventions, specified populations, comparison conditions, and measured outcomes; results for a structured meaning-centered intervention cannot automatically be generalized to all existential psychotherapy. Its historical influence on clinical vocabulary and therapeutic practice is therefore distinct from the evidence supporting any particular intervention.

International reception and cross-cultural encounters

Anglophone reception depended on anthologies and translations that helped establish which authors counted as existentialists. Walter Kaufmann’s Existentialism from Dostoevsky to Sartre (1956) assembled philosophical and literary texts within a broad genealogy, making nineteenth-century precursors accessible alongside twentieth-century thinkers. Its selection encouraged readers to understand existentialism as a tradition crossing the boundary between philosophy and literature rather than as Sartre’s doctrine alone. Hazel E. Barnes’s English translation of Being and Nothingness appeared in 1956, thirteen years after its French publication; John Macquarrie and Edward Robinson’s translation of Heidegger’s Being and Time followed in 1962. These publications enabled more sustained engagement with arguments previously encountered through fiction, lectures, and introductory accounts. They also exposed differences between Sartrean existentialism and Heidegger’s investigation of Being that popular presentations sometimes obscured.

In Japan, encounters with European existential philosophy developed alongside established debates about Buddhist thought and Western philosophy. The Kyoto School, associated with Nishida Kitarō and his successors, was not simply a Japanese branch of existentialism. Nishitani Keiji studied with Heidegger in Freiburg between 1937 and 1939, and his Religion and Nothingness, published in Japanese in 1961 and in Jan Van Bragt’s English translation in 1982, brought European discussions of nihilism into dialogue with Buddhist accounts of emptiness. Nishitani distinguished nihilistic meaninglessness from emptiness understood as a transformation of the standpoint from which self and world are apprehended. Such comparisons therefore involved disagreement as well as affinity: Buddhist critiques of attachment to a substantial self cannot simply be identified with Sartre’s account of consciousness or Heidegger’s analysis of existence.

Frantz Fanon adapted and challenged European accounts of subjectivity in Black Skin, White Masks (1952). Drawing on phenomenology, Hegelian recognition, and Sartre, he examined how racial classification shapes bodily experience and interpersonal relations under colonial conditions. His account of being identified through the white gaze qualified descriptions of embodiment that treat the lived body without sufficiently considering its historical and racial organization. Recognition was consequently not merely an encounter between abstractly equal consciousnesses: colonial institutions and inherited representations structured who could appear as an autonomous subject. Fanon also challenged Sartre’s interpretation of Négritude in “Black Orpheus” (1948), resisting its placement as a transitional moment within an anticipated dialectical resolution. Scholarship on colonial experience has accordingly read Fanon as transforming existential and phenomenological resources rather than merely applying European theories.

Reception in Latin America followed distinct publishing and intellectual networks. In Mexico, the Spanish émigré philosopher José Gaos translated Being and Time as El ser y el tiempo, published by Fondo de Cultura Económica in 1951. His teaching helped make German phenomenology and existential philosophy available within Mexican philosophical debates. The Mexican Hiperión group, active from 1948 and including Emilio Uranga and Luis Villoro, drew on these resources to investigate historically situated existence and Mexican identity; Uranga’s Análisis del ser del mexicano appeared in 1952. Buenos Aires provided another publishing center: Losada issued Aurora Bernárdez’s Spanish translation of Sartre’s Nausea in 1947. Direct encounters also mattered. Sartre and Simone de Beauvoir visited Cuba in 1960, and Sartre’s reports, collected as Huracán sobre el azúcar, connected his reception to debates about revolution rather than exclusively to questions of individual existence.

Problems of translation shaped these exchanges. Heidegger’s Dasein has been retained in German or rendered through expressions such as “being-there”; Gaos’s ser-ahí made its component terms visible but required explanation to prevent a merely spatial reading. Jaspers’s Existenz designates possible selfhood that cannot be exhausted by objective description, not simply the fact that something exists. French angoisse, variously translated as “anguish,” “anxiety,” or “dread,” can acquire psychological or theological associations different from its philosophical use. Sartre’s mauvaise foi, conventionally “bad faith,” means a self-deceptive relation to freedom and facticity, not merely dishonesty toward others. Choices among these equivalents influence whether readers understand existential concepts as accounts of human existence, emotional states, or moral judgments.

Criticism and subsequent philosophical influence

A recurrent objection concerns the distance between choosing a project and possessing the resources to realize it. Herbert Marcuse’s “Existentialism: Remarks on Jean-Paul Sartre’s L’Être et le Néant” (1948) questioned whether Sartre’s account of freedom adequately registered historically specific domination: describing both master and servant as ontologically free can obscure inequalities in their effective possibilities. Such criticism bears especially on formulations that make every situation appear equally open to individual reinterpretation. It applies less straightforwardly to the tradition as a whole. Beauvoir’s The Second Sex (1949) analyzes how institutions and material dependence restrict agency, while Sartre’s Critique of Dialectical Reason (1960) investigates scarcity, collective action, and the ways past activity becomes an apparently external constraint.

In the French intellectual setting of the 1960s, structuralism challenged explanations centered on conscious intention by examining systems of linguistic differences, kinship relations, and cultural classification. Claude Lévi-Strauss’s The Savage Mind (1962) directly criticized Sartre’s treatment of history and dialectical reason, resisting the elevation of historically situated European categories into universal philosophical standards. Louis Althusser’s “Marxism and Humanism” (1964) argued for a theoretical break with explanations grounded in a universal human essence. Michel Foucault’s The Order of Things (1966) treated “man” as a historically constituted object of knowledge rather than the permanent foundation of inquiry. These interventions differed substantially, but displaced the self-originating subject as an explanatory starting point. Later approaches grouped under poststructuralism further examined how discourse and power constitute subjects. Their target should nevertheless be distinguished from existential accounts that already describe subjectivity as embodied, divided, and socially situated.

Questions associated with analytic philosophy concern both argumentative validity and the status of phenomenological description. An experience of deliberating among possibilities does not, without additional argument, establish metaphysical indeterminism; similarly, descriptions of anxiety or contingency do not automatically justify conclusions about reality as a whole. Rudolf Carnap’s “The Elimination of Metaphysics Through Logical Analysis of Language” (1932) treated Heidegger’s language about Nothing as an example of expressions that violate logical syntax while appearing meaningful. This criticism addressed Heidegger rather than every existentialist, and presupposed a contested account of meaningful language. Analytic reception was not uniformly dismissive: Mary Warnock’s Existentialism (1970), for example, offered a sustained exposition and critical assessment. Disagreement concerns not simply obscurity, but whether existential claims function as descriptions, arguments, interpretive disclosures, or combinations of these.

Subsequent work in philosophy of mind has drawn particularly on Heidegger and Merleau-Ponty to challenge accounts that begin with an isolated mind representing an external world. Hubert Dreyfus’s What Computers Can’t Do (1972) used phenomenological accounts of skilled involvement to criticize assumptions in symbolic artificial intelligence. Research on embodied cognition likewise investigates how bodily capacities and practical environments structure perception and action. Shaun Gallagher’s How the Body Shapes the Mind (2005), for example, develops distinctions involving body image and body schema through engagement with phenomenology and cognitive research. Such continuities do not make this research existentialist, nor do they establish that every existential claim receives experimental confirmation.

Within feminist philosophy, Beauvoir’s account of becoming a woman remains important for debates over embodiment, social formation, and agency. Judith Butler’s “Sex and Gender in Simone de Beauvoir’s Second Sex” (1986) exemplifies a critical appropriation rather than simple adherence. In philosophy of race, Lewis Gordon’s Bad Faith and Antiblack Racism (1995) adapts existential analysis to examine racism as an evasion of human freedom and responsibility. These developments also affect debates over the canon: scholarship increasingly asks how centering a small European, predominantly male group obscures contributions by Beauvoir, Fanon, and other thinkers concerned with situated existence.

Popular expressions such as “existential crisis” commonly designate uncertainty about identity, purpose, or mortality; they need not refer to a philosophical doctrine or a clinical category. Technical inquiry distinguishes these concerns from particular accounts of anxiety, authenticity, and freedom. Consequently, the tradition’s boundaries remain disputed: thematic resemblance, documented intellectual influence, and explicit identification with existentialism provide different grounds for inclusion.