Whether we immoralists do any harm to virtue?-Just as little as anarchists do to princes. It is only because they have been shot at that they once again sit securely on their thrones. Moral: we must shoot at morals.

...the only psychologist from whom I have anything to learn.

Linguistic danger to spiritual freedom.- Every word is a prejudice.

The grand style arises when beauty wins a victory over the monstrous.

Those who cannot understand how to put their thoughts on ice should not enter into the heat of debate.

Two great European narcotics, alcohol and Christianity.

The destiny of the human race is to widen the gap separating it from the lower races of animals. Any code of morality which retains its permanence and authority after the conditions of existence which gave rise to it have changed, works against this upward progress of man.