Existentialist philosophy has been used as a therapeutic tool, with 2 Swiss psychiatrists pioneering its concepts—popularized by thinkers like Kierkegaard, Camus, and Sartre—to help patients navigate their issues.

Many writers considered 'existentialist' didn't identify with the term

“Existentialism” was first introduced in 1943 by philosopher Gabriel Marcel. Jean-Paul Sartre and Simone de Beauvoir readily adopted the term, but others, such as Albert Camus and Martin Heidegger, rejected it. Earlier philosophers, like Søren Kierkegaard and Friedrich Nietzsche, were long dead by the time the word was in vogue.

Existentialism is a loosely defined philosophy that encouraged authentic living

The writers and thinkers often characterized as “existentialist” sometimes contradict one another. Considering that, boiling the philosophy down to a set of tenets can be difficult. Generally, those associated with existentialism were inspired by the 19th-century works of Søren Kierkegaard and Friedrich Nietzsche, and they believed that individuals needed to defy conformity and define the meaning of life for themselves.

Existentialist literature explores the philosophy's ideas

Existentialism isn't confined to philosophical texts. Some of the movement's figureheads, like Albert Camus and Jean-Paul Sartre, were also novelists. Christina Howells, Professor of French at the University of Oxford, suggests this is because existentialism, as a philosophy, requires human stories to be fully understood, and literature makes the experience of the human condition more present and immediate.

Existentialism inspired Franklin Roosevelt and Martin Luther King Jr.

The Danish philosopher, sometimes called “the father of existentialism,” believed that individuals needed to resist the temptation of conformity and instead discover their authentic selves. His work became remarkably influential in the 20th century. In 1944, Roosevelt said that reading Kierkegaard made him understand how the Nazis could’ve enacted so much violence. In 1959, King wrote that existentialism was “especially meaningful for our time.”

Scholars trace existential anxiety back to early Hebrew scriptures

Paul Megna, a scholar of literature and philosophy, notes that the existentialist ideas of Kierkegaard (and, to a lesser extent, Sarte and Camus) had their roots in much earlier texts, which posited that "fear of the Lord" was "the beginning of wisdom."

An existentialist reading list

If you’re looking for a starting point for diving into existentialist thought, this is a great resource. Its titles are not exactly obscure—Albert Camus’ “The Stranger,” Franz Kafka’s “The Trial,” and Søren Kierkegaard’s “Either/Or” are among the most famous works in Western literature—but the list provides some digestible context for each text, which will help you decide the best place to begin your journey.

Jean-Paul Sartre believed 'existence precedes essence'

The existentialist figurehead argued that humans are not born with an identity or purpose; instead, they develop them throughout their lives. For Sartre, this meant making meaning for oneself rather than relying on authorities (like religion or government) to provide it.

Existential dread still informs popular comedies

Although the Theater of the Absurd was primarily a 20th-century trend, a similar kind of existentialist-minded comedy still exists in popular culture. Films like “Everything Everywhere All At Once” and television shows like “BoJack Horseman” tackle the same issues that existentialist thinkers like Sartre, Beauvoir, and Camus explored, transforming those profound questions into thought-provoking and crowd-pleasing works of comedy.

Theater of the Absurd brought existentialist ideas to the stage

In the 1950s, playwrights horrified by the events of World War II and inspired by existentialism’s response to it began staging plays that brought many of the philosophy's ideas to center stage. Critic Martin Esslin coined the term “Theater of the Absurd” in 1960, citing the plays of Samuel Beckett, Arthur Adamov, and Eugene Ionesco as indicative of a new theatrical style that rejected realism and standard plot.

One teacher's lesson on existentialism and social media use

During a unit on existentialist literature and philosophy, one teacher at Massachusetts’ Phillips Academy asked students to surrender their cell phones to test Kierkegaard’s thoughts on the danger of conformity and Sartre’s belief that humans are “condemned to be free.” Many of them were surprised to find how liberated they felt once they left behind social media.

Sartre believed those who deny their own freedom are operating in 'bad faith'

In "Existentialism is a Humanism," Sartre argues that humans are "condemned to be free"—they are not confined to a divine fate, which means they must take the responsibility of creating their own destinies. Those who reject this freedom, by his estimation, are living in "bad faith."

Heavy metal legends Black Sabbath touched on existentialist themes

Although they’re primarily known for Ozzy Osbourne’s distinctive singing and Tony Iommi’s singular riffs, the metal icons Black Sabbath also have a body of work that explores existentialist questions about mankind’s purpose. Philosophy professor William Irwin unpacks the band's lyrics and applies them to some of existentialism’s major themes, drawing comparisons between the band and philosophers like Friedrich Nietzsche, Jean-Paul Sartre, and Albert Camus.

Sartre and de Beauvoir had an open romantic relationship

The two figureheads of existentialist thought were romantic partners, though they had a publicly open relationship and never lived together. As de Beauvoir says in the interview below, "third persons knew our relationship dwarfed any we could have with them."

Simone de Beauvoir's 'The Second Sex' merged existentialism with feminism

De Beauvoir’s 1949 philosophical treatise criticized patriarchy and its negative impact on women. She argued that gender differences were mainly due to socialization rather than innate qualities, writing that “one is not born, but rather becomes, a woman.” In turn, de Beauvoir believed women should refuse predetermined gender roles and instead define themselves, echoing a key tenet of existentialism.

Psychedelic side effects, including worsening mental health for some patients, give pause

This article explores whether the therapeutic potential of psychedelic drug use is really as good as current research suggests. Scientists are exploring its applications for conditions ranging from the existential crisis that can accompany terminal diagnoses to chronic mental health conditions, including anxiety and PTSD.

Camus and Sartre admired each other's work before becoming friends

The two writers, who would later be considered two of the biggest names associated with existentialism, wrote positive reviews of each others' early work, with Camus praising Sartre's novel "Nausea" and story collection "The Wall" and, later, Sartre favorably compared Camus' "The Stranger" to Franz Kafka and Ernest Hemingway. Still, their reviews included some critiques, hinting at the larger disagreements that would come much later.

Jean-Paul Sartre worked on 'Being and Nothingness' while a prisoner of war

The Nazis invaded France in May 1940. Sartre, as a member of the French Army, was taken prisoner that June. While he was in captivity, he studied Martin Heidegger and worked on "Being and Nothingness," one of his most famous philosophical works.

Surrealism toyed with ideas from psychoanalysis

The movement's artists were interested in the ideas being explored in the burgeoning fields of psychology and psychoanalysis. Dalí, in particular, often created works that toyed with Freudian theories.

A mescaline-induced hallucination stayed with Jean-Paul Sartre throughout his life

In 1935, Sartre was injected with mescaline, a psychedelic drug that was then used to treat alcoholism and depression, by his friend at the Hôpital Sainte-Anne in Paris. It was not a good trip: Sartre saw nightmarish crabs for days and suffered a mental breakdown. For the rest of his life, crustaceans like the ones he saw during the hallucination appeared in his works.

Novelist Richard Wright joined the existentialists in Paris

The author of “Black Boy” and “Native Son” left the United States in 1946 to escape his home country’s racial inequality. In Paris, he explored existentialist ideas and spent time with Simone de Beauvoir and Jean-Paul Sartre. “The Outsider,” a novel he wrote while living in France, embraced many of the philosophy’s central themes.

Using psychedelics to manage a cancer diagnosis

Dr. Roland Griffiths helped lead the revival of psychedelic research, often prescribing the use of psilocybin to address severe depression or anxiety in patients. This podcast explores how Griffiths leaned on his own career after being diagnosed with cancer and facing the prospect of death.

What can psychedelics teach us about dying?

Psychedelics have made their way into the world of licensed mental healthcare, and the drugs have been proven to help people process and lessen anxiety and depression. What does this mean for people with terminal illnesses who are afraid of death?

Albert Camus believed existence was 'absurd'

He didn't use "absurd" as we often do—meaning something silly—but instead to describe humans' desire to ascribe meaning and transcendence in a world that provided neither. Camus believed we needed to acknowledge and accept this absurdity rather than hopelessly believing we'd one day overcome it.

Albert Camus believed existence was 'absurd'

He didn't use "absurd" as we often do—meaning something silly—but instead to describe humans' desire to ascribe meaning and transcendence in a world that provided neither. Camus believed we needed to acknowledge and accept this absurdity rather than hopelessly believing we'd one day overcome it.

How philosophers have approached death throughout history

Philosophers often argue the counterintuitive view that there's actually nothing to fear about death. How do they come to this attitude of acceptance toward fate? This video articulates the views on death from Socrates, Epicurus, and Zhuangzi in a breezy, digestible way.

Sartre admired American novelist William Faulkner

In addition to writing philosophy and fiction, Jean-Paul Sartre was also a literary critic. His 1939 essay on Faulkner's "The Sound and the Fury" focused on the way the American novelist commented on time, favorably comparing him to Marcel Proust. Ultimately, Sartre argues Faulkner's "despair" about a "closed future" is a result of the "social conditions of our present life." Ever the existentialist, though, Sartre suggests this reality is something that should inspire rather than depress.

Simone de Beauvoir was a serious hiker

The existentialist icon began hiking as a young school teacher in Marseilles. Eventually, she would plan out long trips that covered up to 18 miles and took her around 12 hours to complete. She would later write that the hikes saved her “from boredom, regret, and several sorts of depression.”

Read Albert Camus' 'Myth of Sisyphus and Other Essays'

Camus' most famous work of nonfiction is this collection of philosophical essays. Perhaps the most resonant entry is the title essay, which reimagines the Greek myth of a man condemned to roll a boulder for all eternity. Rather than presenting the story as a cautionary tale about defying the gods, as the original myth intended, Camus considered Sisyphus an "absurd hero" for his actions and imagined him smiling as he endlessly toiled at his repetitive punishment.

What is transcendentalism?

The 19th-century movement, largely centered around the ideas of Ralph Waldo Emerson, believed that individuals needed to form transcendent connections with the universe. For many transcendentalist philosophers, writers, and religious figures, that meant seeking it in nature. This Stanford explainer on the philosophy digs deep into its major concepts and figureheads.

Kierkegaard used pseudonyms throughout his writing

“The Father of Existentialism” published over 40 texts and 40 articles during his life and used several pen names throughout them. The pseudonyms allowed him to present relevant opinions in a relatable, first-person manner without the reader believing that Søren Kierkegaard earnestly held them.

Albert Camus' 'The Fall' encourages readers to live without illusions

The writer's final complete novel is a series of dramatic monologues from Jean-Baptiste Clamence, who tries to explain to a stranger the sound of laughter that began following him. As the "Philosophize This!" podcast argues, the book is Camus' attempt at wrestling with some of the thornier aspects of existentialism in a form that's more digestible than a dense philosophical tome.

JJ Schildkraut theorized depression is linked to brain chemical imbalances—in 1965

Schildkraut was one of the first to put forward this idea, which stemmed from lab animal research. A decade later, researchers published the first landmark paper on fluoxetine—better known by trade name Prozac—which increases serotonin levels in the brain.

Mental health applications of psychedelics

Scientists are investigating psilocybin, ketamine, LSD, and MDMA (also known as ecstasy) as potential treatments for mental health issues. These drugs enable an altered state of consciousness, which can have beneficial or harmful impacts depending on the nature of the experience. Research suggests these drugs can be effective in treating substance use disorders, mental health conditions, including depression and anxiety, and psychiatric disorders, including schizophrenia.

The term schizophrenia was coined by Swiss psychiatrist Eugen Bleuler in 1908

He launched the word during a lecture at the German Psychiatric Association in Berlin. In his talk he focused on the splitting of psychic functioning as a defining feature of the disease and noted it wasn't associated with dementia or factors like early puberty onset.

John Steinbeck's philosophical ideas, which he often explored in his novels, wrestled with the role of the individual and the power of community.

Jean-Paul Sartre famously wrote that 'Hell is—other people'

The line appears toward the end of the play "No Exit." One character, realizing that he's confined to live out the rest of his days with the play's other two characters, exclaims, "There's no need for red-hot pokers. Hell is—other people!"

Who provides therapy is more important than what method they practice

What makes therapy work well is the connection that patients feel with their therapist, and the trust in that relationship. Some research suggests that while the therapeutic model—say cognitive behavior therapy or psychodynamic therapy—accounts for roughly 15% of outcomes, the therapeutic relationship with the therapist accounts for more than 30%.

The widespread violence of World War I birthed surrealism

Following World War I, artists used unconventional forms of expression to make sense of the death and destruction they'd witnessed for years. Life as they knew it had ended, and movements like Surrealism, founded by André Breton, rebelled against tradition.

Famed psychologist Sigmund Freud believed dreams were symbolic expressions of desire.