I love something: and scarcely do I love it completely when the tyrant in me says: "I want that in sacrifice." This cruelty is in my entrails. Behold! I am evil.

The word 'Christianity' is already a misunderstanding - in reality there has been only one Christian, and he died on the Cross.

When you stare into an abyss for a long time, the abyss also stares into you.

O Voltaire! O humanity! O idiocy! There is something ticklish in "the truth," and in the SEARCH for the truth; and if man goes about it too humanely-"il ne cherche le vrai que pour faire le bien"-I wager he finds nothing!

One sticks to an opinion because he prides himself on having come to it on his own, and another because he has taken great pains to learn it and is proud to have grasped it: and so both do so out of vanity.

Evolution does not make happiness its goal; it aims simply at evolution and nothing else.

Ten times must you laugh during the day, and be cheerful; otherwise your stomach, the father of affliction, will disturb you in the night.