Cure yourself of the inclination to bother about how you look to other people. Be concerned only . . . with the idea God has of you.

Hell has been conceived as a police institution, to inspire fear in this world. But the worst of it all is that it no longer frightens anyone, and therefore it will have to be closed down.

The greatest height of heroism to which an individual, like a people, can attain is to know how to face ridicule.

All knowledge has an ultimate goal. Knowledge for the sake of knowledge is, say what you will, nothing but a dismal begging of the question.

The only reactionaries are those who find themselves at home in the present.

True science teaches, above all, to doubt and be ignorant.

The mists remain of the false glory that erupts from history.