Jean-Paul Charles Aymard Sartre was a French philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic, considered a leading figure in 20th-century French philosophy and Marxism. Sartre was one of the key figures in the philosophy of existentialism. Born 1905-06-21 in Paris, France, France. View the full bodygraph with type, strategy, authority, profile, centers, channels and gates.