Precursors Some have argued that existentialism has long been an element of European religious thought, even before the term came into use.
William Barrett identified
Blaise Pascal and
Søren Kierkegaard as two specific examples.
Jean Wahl also identified
William Shakespeare's
Prince Hamlet ("
To be, or not to be"),
Jules Lequier,
Thomas Carlyle, and
William James as existentialists. According to Wahl, "the origins of most great philosophies, like those of
Plato,
Descartes, and
Kant, are to be found in existential reflections." Precursors to existentialism can also be identified in the works of Iranian Muslim philosopher
Mulla Sadra (c. 1571–1635), who would posit that "
existence precedes essence" becoming the principle expositor of the
School of Isfahan, which is described as "alive and active".
19th century Kierkegaard and Nietzsche Kierkegaard is generally considered to have been the first existentialist philosopher. He proposed that each individual—not reason, society, or religious orthodoxy—is solely tasked with giving
meaning to life and living it sincerely, or "authentically". Kierkegaard and Nietzsche were two of the first philosophers considered fundamental to the existentialist movement, though neither used the term "existentialism" and it is unclear whether they would have supported the existentialism of the 20th century. They focused on subjective human experience rather than the objective truths of mathematics and science, which they believed were too detached or observational to truly get at the human experience. Like Pascal, they were interested in people's quiet struggle with the apparent meaninglessness of life and the use of diversion to escape from
boredom. Unlike Pascal, Kierkegaard and Nietzsche also considered the role of making free choices, particularly regarding fundamental values and beliefs, and how such choices change the nature and identity of the chooser. Kierkegaard's
knight of faith and Nietzsche's
Übermensch are representative of people who exhibit
freedom, in that they define the nature of their own existence. Nietzsche's idealized individual invents his own values and creates the very terms they excel under. By contrast, Kierkegaard, opposed to the level of abstraction in Hegel, and not nearly as hostile (actually welcoming) to
Christianity as Nietzsche, argues through a pseudonym that the objective certainty of religious truths (specifically Christian) is not only impossible, but even founded on logical paradoxes. Yet he continues to imply that a
leap of faith is a possible means for an individual to reach a higher stage of existence that transcends and contains both an aesthetic and ethical value of life. Kierkegaard and Nietzsche were also precursors to other intellectual movements, including
postmodernism, and various strands of
psychotherapy. However, Kierkegaard believed that individuals should live in accordance with their thinking. In
Twilight of the Idols, Nietzsche's sentiments resonate the idea of "existence precedes essence." He writes, "no one
gives man his qualities-- neither God, nor society, nor his parents and ancestors, nor he himself...No one is responsible for man's being there at all, for his being such-and-such, or for his being in these circumstances or in this environment...Man is not the effect of some special purpose of a will, and end..." Within this view, Nietzsche ties in his rejection of the existence of God, which he sees as a means to "redeem the world." By rejecting the existence of God, Nietzsche also rejects beliefs that claim humans have a predestined purpose according to what God has instructed.
Dostoyevsky The first important literary author also important to existentialism was the Russian, Dostoyevsky. Dostoyevsky's
Notes from Underground portrays a man unable to fit into society and unhappy with the identities he creates for himself. Sartre, in his book on existentialism
Existentialism is a Humanism, quoted Dostoyevsky's
The Brothers Karamazov as an example of
existential crisis. Other Dostoyevsky novels covered issues raised in existentialist philosophy while presenting story lines divergent from secular existentialism: for example, in
Crime and Punishment, the protagonist Raskolnikov experiences an existential crisis and then moves toward a Christian Orthodox worldview similar to that advocated by Dostoyevsky himself.
Early 20th century In the first decades of the 20th century, a number of philosophers and writers explored existentialist ideas. The Spanish philosopher
Miguel de Unamuno y Jugo, in his 1913 book
Tragic Sense of Life, emphasized the life of "flesh and bone" as opposed to that of abstract rationalism. Unamuno rejected systematic philosophy in favor of the individual's quest for faith. He retained a sense of the tragic, even absurd nature of the quest, symbolized by his enduring interest in the eponymous character from the
Miguel de Cervantes novel
Don Quixote. A novelist, poet and dramatist as well as philosophy professor at the University of Salamanca, Unamuno wrote a short story about a priest's crisis of faith,
Saint Manuel the Good, Martyr, which has been collected in anthologies of existentialist fiction. Another Spanish thinker,
José Ortega y Gasset, writing in 1914, held that human existence must always be defined as the individual person combined with the concrete circumstances of his life: "
Yo soy yo y mi circunstancia" ("I am myself and my circumstances"). Sartre likewise believed that human existence is not an abstract matter, but is always situated ("
en situation"). Although
Martin Buber wrote his major philosophical works in German, and studied and taught at the Universities of Berlin and
Frankfurt, he stands apart from the mainstream of German philosophy. Born into a Jewish family in Vienna in 1878, he was also a scholar of Jewish culture and involved at various times in
Zionism and
Hasidism. In 1938, he moved permanently to
Jerusalem. His best-known philosophical work was the short book
I and Thou, published in 1922. For Buber, the fundamental fact of human existence, too readily overlooked by scientific rationalism and abstract philosophical thought, is "man with man", a dialogue that takes place in the so-called "sphere of between" (
"das Zwischenmenschliche"). Two Russian philosophers,
Lev Shestov and
Nikolai Berdyaev, became well known as existentialist thinkers during their post-Revolutionary exiles in Paris. Shestov had launched an attack on rationalism and systematization in philosophy as early as 1905 in his book of aphorisms
All Things Are Possible. Berdyaev drew a radical distinction between the world of spirit and the everyday world of objects. Human freedom, for Berdyaev, is rooted in the realm of spirit, a realm independent of scientific notions of causation. To the extent the individual human being lives in the objective world, he is estranged from authentic spiritual freedom. "Man" is not to be interpreted naturalistically, but as a being created in God's image, an originator of free, creative acts. He published a major work on these themes,
The Destiny of Man, in 1931.
Gabriel Marcel, long before coining the term "existentialism", introduced important existentialist themes to a French audience in his early essay "Existence and Objectivity" (1925) and in his
Metaphysical Journal (1927). A dramatist as well as a philosopher, Marcel found his philosophical starting point in a condition of metaphysical alienation: the human individual searching for harmony in a transient life. Harmony, for Marcel, was to be sought through "secondary reflection", a "dialogical" rather than "dialectical" approach to the world, characterized by "wonder and astonishment" and open to the "presence" of other people and of God rather than merely to "information" about them. For Marcel, such presence implied more than simply being there (as one thing might be in the presence of another thing); it connoted "extravagant" availability, and the willingness to put oneself at the disposal of the other. Marcel contrasted
secondary reflection with abstract, scientific-technical
primary reflection, which he associated with the activity of the abstract
Cartesian ego. For Marcel, philosophy was a concrete activity undertaken by a sensing, feeling human being incarnate—embodied—in a concrete world. Although Sartre adopted the term "existentialism" for his own philosophy in the 1940s, Marcel's thought has been described as "almost diametrically opposed" to that of Sartre.—called his own thought, heavily influenced by Kierkegaard and Nietzsche,
Existenzphilosophie. For Jaspers, "
Existenz-philosophy is the way of thought by means of which man seeks to become himself...This way of thought does not cognize objects, but elucidates and makes actual the being of the thinker". Jaspers, a professor at the university of
Heidelberg, was acquainted with Heidegger, who held a professorship at
Marburg before acceding to Husserl's chair at
Freiburg in 1928. They held many philosophical discussions, but later became estranged over Heidegger's support of
National Socialism. They shared an admiration for Kierkegaard, and in the 1930s, Heidegger lectured extensively on Nietzsche. Nevertheless, the extent to which Heidegger should be considered an existentialist is debatable. In
Being and Time he presented a method of rooting philosophical explanations in human existence (
Dasein) to be analysed in terms of existential categories (
existentiale); and this has led many commentators to treat him as an important figure in the existentialist movement.
After the Second World War Following the Second World War, existentialism became a well-known and significant philosophical and cultural movement, mainly through the public prominence of two French writers,
Jean-Paul Sartre and
Albert Camus, who wrote best-selling novels, plays and widely read journalism as well as theoretical texts. These years also saw the growing reputation of
Being and Time outside Germany. and
Simone de Beauvoir Sartre dealt with existentialist themes in his 1938 novel
Nausea and the short stories in his 1939 collection
The Wall, and had published his treatise on existentialism,
Being and Nothingness, in 1943, but it was in the two years following the liberation of Paris from the German occupying forces that he and his close associates—Camus, Simone de Beauvoir, Maurice Merleau-Ponty, and others—became internationally famous as the leading figures of a movement known as existentialism. In a very short period of time, Camus and Sartre in particular became the leading public intellectuals of post-war France, achieving by the end of 1945 "a fame that reached across all audiences." Camus was an editor of the most popular leftist (former
French Resistance) newspaper
Combat; Sartre launched his journal of leftist thought,
Les Temps Modernes, and two weeks later gave the widely reported lecture on existentialism and
secular humanism to a packed meeting of the Club Maintenant. Beauvoir wrote that "not a week passed without the newspapers discussing us"; existentialism became "the first media craze of the postwar era." By the end of 1947, Camus' earlier fiction and plays had been reprinted, his new play
Caligula had been performed and his novel
The Plague published; the first two novels of Sartre's
The Roads to Freedom trilogy had appeared, as had Beauvoir's novel
The Blood of Others. Works by Camus and Sartre were already appearing in foreign editions. The Paris-based existentialists had become famous. and he included critical comments on their work in his major treatise
Being and Nothingness. Heidegger's thought had also become known in French philosophical circles through its use by
Alexandre Kojève in explicating Hegel in a series of lectures given in Paris in the 1930s. The lectures were highly influential; members of the audience included not only Sartre and Merleau-Ponty, but
Raymond Queneau,
Georges Bataille,
Louis Althusser,
André Breton, and
Jacques Lacan. A selection from
Being and Time was published in French in 1938, and his essays began to appear in French philosophy journals. Heidegger read Sartre's work and was initially impressed, commenting: "Here for the first time I encountered an independent thinker who, from the foundations up, has experienced the area out of which I think. Your work shows such an immediate comprehension of my philosophy as I have never before encountered." Later, however, in response to a question posed by his French follower
Jean Beaufret, Heidegger distanced himself from Sartre's position and existentialism in general in his
Letter on Humanism. Heidegger's reputation continued to grow in France during the 1950s and 1960s. In the 1960s, Sartre attempted to reconcile existentialism and
Marxism in his work
Critique of Dialectical Reason. A major theme throughout his writings was freedom and responsibility. Camus was a friend of Sartre, until their falling-out, and wrote several works with existential themes including
The Rebel,
Summer in Algiers,
The Myth of Sisyphus, and
The Stranger, the latter being "considered—to what would have been Camus's irritation—the exemplary existentialist novel." Camus, like many others, rejected the existentialist label, and considered his works concerned with facing the absurd. In the titular book, Camus uses the analogy of the Greek myth of
Sisyphus to demonstrate the futility of existence. In the myth, Sisyphus is condemned for eternity to roll a rock up a hill, but when he reaches the summit, the rock will roll to the bottom again. Camus believes that this existence is pointless but that Sisyphus ultimately finds meaning and purpose in his task, simply by continually applying himself to it. The first half of the book contains an extended rebuttal of what Camus took to be existentialist philosophy in the works of Kierkegaard, Shestov, Heidegger, and Jaspers.
Simone de Beauvoir, an important existentialist who spent much of her life as Sartre's partner, wrote about
feminist existentialist ethics in her works, including
The Second Sex and
The Ethics of Ambiguity. In her essay "What is Existentialism?" Beauvoir provides an outline of how she understands and defines existentialist philosophy. Although often overlooked due to her relationship with Sartre, de Beauvoir integrated existentialism with other forms of thinking such as
feminism, unheard of at the time, resulting in alienation from fellow writers such as Camus. It has been said that Merleau-Ponty's work
Humanism and Terror greatly influenced Sartre. However, in later years they were to disagree irreparably, dividing many existentialists such as de Beauvoir, == Influence outside philosophy ==