"Man is responsible for his own choices, even if he chooses not to choose."

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

"The individual is not born free, he becomes free."

"What do you want to do with the [Communist] Party? A racing stable? What good is it to sharpen a knife every day if you never use it for slicing? A party is never more than a means. There is only one …"

"The world is full of things that have no explanation."