Dec 26, · The Road Less Traveled: A New Psychology of Love, Traditional Values and Spiritual Growth, This is one of the best-known book of Peck’s, and this book has made his Reputation. This book is a description of attributes that make for a fulfilled human being, based largely on his experience as a psychiatrist and a person. Evil is an extreme form of what Scott Peck, in The Road Less Traveled, calls a character and personality disorder. Using the My Lai Massacre as a case study Peck also examines group evil, discussing how human group morality is strikingly less than individual morality. M. Scott Peck, M.D. is the author of the New York Times best-seller The Road Less Traveled, with six million copies in print. His other books include Further Along the Road Less Traveled, The Road Less Traveled and Beyond, Meditations from the Road and Golf and the Spirit/5.