A belief, however necessary it may be for the preservation of a species, has nothing to do with truth. The falseness of a judgment is not for us necessarily an objection to a judgment. The question is to what extent it is life-promoting, life-preserving, species preserving, perhaps even species cultivating. To recognize untruth as a condition of life--that certainly means resisting accustomed value feelings in a dangerous way; and a philosophy that risks this would by that token alone place itself beyond good and evil.
Friedrich NietzscheOn all the walls, wherever walls exist, I will inscribe this eternal indictment of Christianity--I have letters to make even blindmen see.... I call Christianity the single great curse, the single great innermost depravity, the single great instinct of revenge, for which no means is poisonous, secretive, subterranean, small enough--I call it mankind's single immortal blemish.... And we reckon time from the dies nefastus with which this calamity arose--following Christianity's first day!--Why not following its last day, instead?--Following today?--Transvaluation of all values!
Friedrich Nietzsche