Hunters vs criminals In Erich Fromm's benchmark book "The Anatomy of Human Destructiveness", he states that "the behavioural patterns and neurological processes in predatory aggression are not analogous to the other types of animal aggression." He finds they are in fact closer to the biochemistry of pleasure and joy. In Fromm's studies of aggression he concludes that the motives of hunters are psychologically very different from those of criminals and finds that hunters tend to be peaceful people. Erich Fromm. 1973. "The Anatomy of Human Destructiveness". Holt, Rinehart and Winston, New York.