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

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.

Existentialist writer Jean-Paul Sartre coined the famous phrase 'Hell is—other people' in his play 'No Exit'

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.

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.

Sartre eventually denounced communism

The French philosopher was a long-time ardent supporter of communism and the USSR. He finally spoke out against the movement with the 1956 Soviet invasion of Hungary, saying that the move was "made possible by 12 years of terror and imbecility."

Jean-Paul Sartre rejected his Nobel Prize for literature

Sartre won the award in 1964, but refused it, explaining, "The writer must therefore refuse to let himself be transformed into an institution, even if this occurs under the most honorable circumstances, as in the present case."

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!"

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.

The free will versus determinism debate: major thinkers weigh in

Do we have free will in our actions or are we totally determined? An all-star cast of contemporary thinkers share insights on the crucial debate.

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.

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.

One of Sartre and de Beauvoir's lovers accused them of exploitation

The philosophical duo's open relationship sometimes included shared partners, including de Beauvoir's students. One of those students, Bianca Lamblin, wrote a book, "A Disgraceful Affair," about the experience and characterized it as sexual exploitation.

Sartre wrote an 8-hour screenplay for a Freud biopic

Sartre was hired to write the screenplay for what would eventually become John Huston's 1962 film "Freud: The Secret Passion," about the life of the psychoanalyst. Sartre, however, had trouble sticking to the parameters of Hollywood. An early draft was estimated to be five hours long. Rather than shortening it, as Huston suggested, Sartre extended it to eight hours and was eventually removed from the production.

A quote by Herman Melville

"Whoever is not in the possession of leisure can hardly be said to possess independence."

Defiance is choosing to act in line with your values under pressure

Compliance often arises from insinuation anxiety and social pressure, making defiance critical in protecting personal integrity and, in turn, strengthening institutions. Practicing defiance may be achieved through the Defiance Compass framework and can lead to a more values-driven society.

Candide's 'Voltaire' satirized blind optimism

The French philosopher’s most famous work, published in 1759, cataloged the journey of its titular hero, who was guided by a crackpot philosopher and the belief that optimism was the solution to life’s problems, despite all the evidence to the contrary.

Why Thoreau considered himself spiritual but not religious

This interview with Richard Higgins, author of "Thoreau's God," unpacks the writer's deep spirituality, which underlies his exploration of "deliberate" living. Higgins notes that Thoreau was opposed to the dogma of organized religion but took his spirituality seriously, treating July 4, 1845, when he moved to Walden Pond, as his own "spiritual independence day."

Who said 'rebellion to tyrants is obedience to God'?

As a brief, punchy statement rejecting unjust authority, "Rebellion to tyrants is obedience to God" became widely adopted during the American Revolution. The phrase is often misattributed to Benjamin Franklin and Thomas Jefferson, the latter of whom used it on his personal seal. This fact-checked article dives into the history of the phrase, claiming it was first used in 1770 in an epitaph for an English judge. Read more here.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.

Performance art depends on the actions of the artist

Part theater, part anarchy, part absurdism, performance art encompasses a whole range of media and genres. The short version is that it’s conceptual, often spontaneous art that is performed live. Performance art is inherently confrontational, challenging societal ideas of what constitutes “fine art,” making it an ideal vehicle for political and protest pieces. It’s closely related to other avant-garde movements like Dada and Futurism.

The Faustian Bargain is a classic trope about cutting a deal with the devil

Goethe's "Faust," Broadway's "Damn Yankees," and the American folktale about Robert Johnson all embrace the familiar details of the Faustian Bargain, in which a young, eager striver is offered their wildest dreams in exchange for the rights to their soul.

Madison argued that the government had no authority to regulate faith

James Madison viewed religion as a matter of individual conscience beyond the reach of the state, opposing government funding of churches and advancing a model of religious liberty based on noninterference rather than official toleration.

Social scientists hold various beliefs about the role of marriage in our lives

Functionalists believe that marriage fulfills specific needs, while conflict theory highlights inherent power struggles within a couple’s relationship.

Critic Harold Bloom believed Shakespeare invented the modern human

Yale critic Harold Bloom believed the Bard transformed the way humanity understood itself, a thesis laid out in his book "Shakespeare: The Invention of the Human."

After NASA's Voyager 1 captured Earth as a single pixel as it left the solar system in 1990, astronomer Carl Sagan used the image to reflect on humanity's fragility and the responsibility to protect 'the only world we've ever known.'

'Not everything that is faced can be changed, but nothing can be changed until it is faced.'

- Author James Baldwin (1924–1987)

A Harvard professor argues that impostor syndrome can be a good sign

Specifically, Arthur C. Brooks has argued that self-doubt is usually evidence of healthy humility—not incompetence—and a clear contrast to the overconfidence of people who actually are impostors in their careers.

FDR inspired Rockwell's 'Four Freedoms'

In his 1941 State of the Union speech, President Franklin Delano Roosevelt defined "Four Freedoms" that democratic societies provided: freedom of speech, freedom of worship, freedom from want, and freedom from fear. Rockwell conceived of a series of paintings based on those values, using his small-town examples of the principles in action. Below is "Freedom From Want."

Famed poet TS Eliot rejected the manuscript for George Orwell's political fable 'Animal Farm,' writing that its criticism of authoritarianism was not 'the right point of view.'

Salvador Dalí believed he was his own dead brother, who had died nine months before he was born

Apeirophobia is an overwhelming fear of living forever, perhaps stemming from the brain's inability to conceptualize an infinite life.

A vending machine run with Anthropic's AI went out of business after it was convinced to give away items for free and sell a video game console.

American dance legend Martha Graham, sometimes called 'the Picasso of dance,' refused to perform at the 1936 Olympics in Berlin and conceived the piece 'Chronicle' in response to the experience.

Before writing 'Walden,' transcendentalist Henry David Thoreau nearly burned down his hometown with a campfire that grew out of control.

The first line of 'immortal' human cells, which can divide indefinitely and are used in scientific research, was nonconsensually taken from a Black woman.

The United States is one of only around two dozen countries with a fully federal system of government, in which power is divided between national and state governments.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

A 2019 Facebook event called on attendees to "Storm Area 51, They Can't Stop All of Us," resulting in countless memes, the creation of a music festival, and eventually the arrests of those who did try to approach the area.

Chaos theory—informally known as the butterfly effect—is the reason why weather forecasts are presented with probabilities rather than certainties.

After her fellow cult members tried to kill her with an LSD-infused hamburger, one member of the Manson Family, the murderous cult led by Charles Manson, decided to testify against the group's leader.

Warren Buffett's former professor Benjamin Graham is known as the 'father of value investing,' a strategy in which investors seek to buy stocks trading below their intrinsic worth.

In 1939, baseball star Lou Gehrig delivered his inspirational 'Luckiest Man' speech after retiring due to the health condition that now bears his name.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

The 19th-century painters of the Hudson River School were among the first American romantics, with portraits that displayed the natural beauty of the young country.

In 2018, 26-year-old missionary John Allen Chau was killed by tribesmen after attempting to reach and evangelize on India's isolated North Sentinel Island

20,000 letters to the advice columnist 'Dear Abby' provide insight into prevailing sex, religion, and LGBTQ fears, anxieties, and concerns from the 1950s onward.

Studies suggest when you sleep is as important as how much you get, and syncing with your circadian rhythms may lead to less fatigue and improved long-term health outcomes

Hotels in Cannes, the glamorous city on the French Riviera, hire hawks to ward off seagulls during the city's famous film festival.