Who wrote "Existentialism Is a Humanism," 1945

SARTRE

This French philosopher and playwright also penned Being and Nothingness and famously declared "Hell is other people" in his 1944 play No Exit.

This clue asks for the author of the 1945 essay Existentialism Is a Humanism, a key text defending existentialist philosophy. The answer is Jean-Paul Sartre, the French philosopher and writer who became the movement’s most famous figure. The title itself hints at his central idea—that existentialism focuses on human freedom and responsibility. No wordplay here, just a direct reference to his well-known work.