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.

Morality is the herd-instinct in the individual.

To be natural means to dare to be as immoral as Nature is.

Science and art have that in common that everyday things seem to them new and attractive.

Great indebtedness does not make men grateful, but vengeful; and if a little charity is not forgotten, it turns into a gnawing worm.

Truly, it is a blessing and not a blasphemy when I teach that "above all things there stands the heaven of chance, the heaven of innocence, the heaven of accident, the heaven of wantonness".

The doctrine of equality! There exists no more poisonous poison: for it seems to be preached by justice itself, while it is the end of justice.