"We do not know what we want and yet we are responsible for what we are."

"Absurd, irreducible; nothing--not even a profound and secret delirium of nature--could explain [a tree root]."

"The word 'existentialism,' which is now so much abused, means nothing else but 'man is free.'"

"Man is a being who is not what he is, and is what he is not."

"If I didn't try to assume responsibility for my own existence, it would seem utterly absurd to go on existing."