Jean-Paul Charles Aymard Sartre (21 June 1905 – 15 April 1980) was a French existentialist philosopher, playwright, novelist, screenwriter, political activist, biographer, and literary critic. He was one of the key figures in the philosophy of existentialism, and one of the leading figures in 20th century French philosophy and Marxism. His work, in addition to being influential to existentialism and Marxism, has also influenced sociology, critical theory, and literary studies, and continues to influence these disciplines. Sartre has also been noted for his relationship with the prominent feminist theorist Simone de Beauvoir.
He was awarded the 1964 Nobel Prize in Literature but refused it, saying that he always declined official honours and that, "a writer should not allow himself to be turned into an institution.