"Because to influence a person is to give him one's own soul. Hedoes not think his natural thoughts, or burn with his naturalpassions. His virtues are not real to him. His sins, if there aresuchthings as sins, are borrowed. He becomes an echo of some oneelse's music, an actor of a part that has not been written for him.The aim of life is self-development. To realize one's natureperfectly—that is what each of us is here for.