The world is the house of the strong.

There is only one duty; that is to be happy.

Only God and some few rare geniuses can keep forging ahead into novelty.

You can be sure that a painter reveals himself in his work as much as and more than a writer does in his.

Oh! how near are genius and madness! Men imprison them and chain them, or raise statues to them.

A thing is not proved just because no one has ever questioned it. What has never been gone into impartially has never been properly gone into. Hence scepticism is the first step toward truth. It must be applied generally, because it is the touchstone.

If you want me to believe in God, you must make me touch him.