"He who feels that in his inmost being he cannot be compared with others, will be his own lawgiver. For one thing is needful: to give style to one’s character. This art is practised by him who, with an eye for the strong and weak sides of his nature, removes from it one quality and another, and then by daily practice and acquired habit replaces them by others which become second nature to him; in other words, he puts himself under restraint in order by degrees to bend his nature entirely to his own law. Only thus does a man arrive at satisfaction with himself, and only thus does he become endurable to others. For the dissatisfied and the unsuccessful as a rule avenge themselves on others. They absorb poison from everything, from their own incompetence as well as from their poor circumstances, and they live in a constant craving for revenge on those in whose nature they suspect harmony. Such people ever have virtuous precepts on their lips; the whole jingle of morality, seriousness, chastity, the claims of life; and their hearts ever burn with envy of those who have become well [harmonious] and can therefore enjoy life."