Such a self-contradiction, as apparently manifests itself among the ascetics, “Life turned against Life,” is—so much is absolutely obvious—from the physiological and not now from the psychological standpoint, simply nonsense. It can only be an apparent contradiction; it must be a kind of provisional expression, an explanation, a formula, an adjustment, a psychological misunderstanding of something, whose real nature could not be understood for a long time, and whose real essence could not be described; a mere word jammed into an old gap of human knowledge. To put briefly the facts against its being real: the ascetic ideal springs from the prophylactic and self-preservative instincts which mark a decadent life, which seeks by every means in its power to maintain its position and fight for its existence; it points to a partial physiological depression and exhaustion, against which the most profound and intact life-instincts fight ceaselessly with new weapons and discoveries. The ascetic ideal is such a weapon: its position is consequently exactly the reverse of that which the worshippers of the ideal imagine—life struggles in it and through it with death and against death; the ascetic ideal is a dodge for the preservation of life.

An important fact is brought out in the extent to which, as history teaches, this ideal could rule and exercise power over man, especially in all those places where the civilization and taming of man was completed: that fact is, the diseased state of man up to the present, at any rate, of the man who has been tamed, the physiological struggle of man with death (more precisely, with the disgust with life, with exhaustion, with the wish for the “end”). The ascetic priest is the incarnate wish for an existence of another kind, an existence on another plane,—he is, in fact, the highest point of this wish, its official ecstasy and passion: but it is the very power of this wish which is the fetter that binds him here; it is just that which makes him into a tool that must labor to create more favorable conditions for earthly existence, for existence on the human plane—it is with this very power that he keeps the whole herd of failures, distortions, abortions, unfortunates, sufferers from themselves of every kind, fast to existence, while he as the herdsman goes instinctively on in front. You understand me already: this ascetic priest, this apparent enemy of life, this denier—he actually belongs to the really great conservative and affirmative forces of life.

– Friedrich Nietzsche, Genealogy of Morality, Third Essay, Section 13