"As poles of good and evil, he was offered two conceptions: egoism and altruism. Egoism was held to mean the sacrifice of others to self. Altruism—the sacrifice of self to others. This tied man irrevocably to other men and left him nothing but a choice of pain: his own pain borne for the sake of others or pain inflicted upon others for the sake of self. … Man was forced to accept masochism as his ideal—under the threat that sadism was his only alternative."