Christianity has taken the part of all the weak, the low, the botched; it has made an ideal out of antagonism to all the self preservative instincts of sound life; it has corrupted even the faculties of those natures that are intellectually most vigorous, by representing the highest intellectual values as sinful, as misleading, as full of temptation.
Friedrich NietzscheTo have to fight the instincts - that is the definition of decadence: as long as life is ascending, happiness equals instinct.
Friedrich Nietzsche