Not doubt, certainty is what drives one insane.

Truth is a mobile army of metaphors, metonyms, anthropomorphisms, in short a sum of human relations which have been subjected to poetic and rhetorical intensification, translation and decoration […]; truths are illusions of which we have forgotten that they are illusions, metaphors which have become worn by frequent use and have lost all sensuous vigour […]. Yet we still do not know where the drive to truth comes from, for so far we have only heard about the obligation to be truthful which society imposes in order to exist" from, "On Truth and Lying in a Non-Moral Sense".

What? You seek something? You wish to multiply yourself tenfold, a hundredfold? You seek followers? Seek zeros!

Away from God and gods did this will lure me: what would there be to create if gods existed?

There is a certain right by which we many deprive a man of life, but none by which we may deprive him of death; this is mere cruelty.

Morality is the best of all devices for leading mankind by the nose.

Whoever writes in blood and aphorisms wants not to be learned but to be learned by heart.