Existentialism Is a Humanism Book by Jean-Paul Sartre

Existentialism Is a Humanism (French: L'existentialisme est un humanisme) is a seminal 1946 philosophical work by Jean-Paul Sartre based on a historic public lecture he delivered in Paris on October 29, 1945. The book serves as a highly accessible introduction to existentialist thought. It was specifically written to defend existentialism against heavy criticism from Marxist and Catholic intellectuals of the postwar era.