How can we explain man's lust for cruelty? In a world in which violence seems to be increasing, social philosopher Erich Fromm has treated this haunting question with depth and scope in the most original and far-reaching work of his brilliant career. Fromm goes beyond the controversy between instinctivists like Lorenz, who argue that man's destructiveness has been inherited from his animal ancestors, and behaviorists like Skinner, who maintain that...