Jean-Paul Sartre
Existence precedes essence: we are condemned to be free.
Misconceptions
"Hell is other people": Sartre thinks other people are our hell.
The line is spoken by Garcin, a character in No Exit, near the end of the play, when he realises he is locked up with two other people who judge him. It is not a thesis that Sartre states in his own name. In the 1945 lecture he even writes that no truth about oneself can be reached without going through the other, who is "indispensable to my existence". The meaning Sartre himself gave the line is not in our corpus: do not quote it as his doctrine without checking.
Sartre coined "existence precedes essence" for his popular lecture of 1945.
The phrase is central in the lecture, where he explains it with the paper-knife. But Being and Nothingness (1943, IV, 1, I) already says that, for the human being, "existence precedes and conditions essence", which amounts to saying that man is free. The lecture is thus the simple version of an idea from the big book, not its origin.
For Sartre, without God everything is permitted, so anyone may do anything.
He takes Dostoevsky's phrase as a starting point: without God, no rule is given in advance, and that is what leaves man "forlorn" and anguished. He then writes that one may choose, but cannot not choose, and that choosing commits all humanity. He rejects the charge of caprice, while admitting that values are chosen. Whether this is enough to avoid arbitrariness is much debated.
Sartre accepted the Nobel Prize in Literature in 1964.
The prize was awarded to him in 1964 and he refused it, as he refused official honours. His public statement about this refusal is not in our corpus.