The individual's duty is to do what he wants to do, to think whatever he likes, to be accountable to no one but himself, to challenge every idea and every person.

What do we mean by saying that existence precedes essence? We mean that man first of all exists, encounters himself, surges up in the world-and defines himself afterward.

What is boredom? It is when there is simultaneously too much and not enough.

The characteristic of every neurosis is to represent itself as natural.

Man is the being whose project it is to be God.

One cannot become a saint when one works sixteen hours a day.

In Les Mots I explain the origin of my madness, of my neurosis. This analysis may help the young who dream of writing.