Life holds only one tragedy, ultimately: not to have been a saint.

He who does not bellow the truth when he knows the truth makes himself the accomplice of liars and forgers.

The honest man must be a perpetual renegade, the life of an honest man a perpetual infidelity. For the man who wishes to remain faithful to truth must make himself perpetually unfaithful to all the continual, successive, indefatigable renascent errors

Any father whose son raises his hand against him is guilty of having produced a son who raised his hand against him.

A great philosophy is not a philosophy without reproach; it is philosophy without fear.

Freedom is a system based on courage.

We must always tell what we see. Above all, and this is more difficult, we must always see what we see.