. Enmity, cruelty, the delight in persecution, in surprises, change, destruction⁠—the turning all these instincts against their own possessors: this is the origin of the “bad conscience.” It was man, who, lacking external enemies and obstacles, and imprisoned as he was in the oppressive narrowness and monotony of custom, in his own impatience lacerated, persecuted, gnawed, frightened, and ill-treated himself; it was this animal in the hands of the tamer, which beat itself against the bars of its cage; it was this being who, pining and yearning for that desert home of which it had been deprived, was compelled to create out of its own self, an adventure, a torture-chamber, a hazardous and perilous desert⁠—it was this fool, this homesick and desperate prisoner⁠—who invented the “bad conscience.” But thereby he introduced that most grave and sinister illness, from which mankind has not yet recovered, the suffering of man from the disease called man, as the result of a violent breaking from his animal past, the result, as it were, of a spasmodic plunge into a new environment and new conditions of existence, the result of a declaration of war against the old instincts, which up to that time had been the staple of his power, his joy, his formidableness.