The snake which cannot cast its skin has to die. As well the minds which are prevented from changing their opinions; they cease to be mind.

A sure way to irritate people and to put evil thoughts into their heads is to keep them waiting a long time. This makes them immoral.

We should turn our death into a celebration, even if only out of a malice towards life: towards the woman who wants to leave--us!

Whoever has looked deeply into the world might well guess what wisdom lies in the superficiality of men.

Idleness is the parent of psychology.

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".

Man is a rope stretched between the animal and the Superman-a rope over an abyss. A dangerous crossing, a dangerous wayfaring, a dangerous looking-back, a dangerous trembling and halting