French philosopher, novelist, playwright, and one of the leading figures of 20th century existentialism, Jean-Paul Sartre passed away on April 15th, 1980. He was 74 years old. Sartre's intellectual output included pioneering works on existentialism, phenomenological ontology, and ethics. He also wrote novels, plays, short stories and biographies of famous people. He is known for his plays like "No Exit", "Dirty Hands", and "Huis Clos." He was awarded the Nobel Prize in Literature in 1964 but refused to accept it. He was also awarded the Legion of Honor in 1964 in recognition of his contribution to philosophy and literature. Sartre is notable for his commitment to various political causes, including anti-colonialism and the rights of immigrants, as well as his advocacy of Marxism and communism. During his lifetime, he was an active member in social and political movements and organizations, most notably existentialism and the Situationist International. His influence and ideas continue to be relevant in philosophy and literature today.