Scott Peck’s People of the Lie proposes that psychology should begin a formal scientific study of evil, and that evil should be added as a diagnosis in American psychiatry’s Diagnostic and Statistical Manual of Mental Disorders (DSM). Peck mentions along the way that when he made this suggestion to an audience of psychologists and theologians, both sides disagreed with him. Though this book is full of interesting ideas and valuable observations, I agree with Peck’s audience.