In Problems of Human Pleasure and Behavior he addresses himself to a variety of subjects of interest to both the layman and the practicing clinical psychologist or psychiatrist: among others, sex and society, masturbation, discipline, menstruation, punishment, aging, and parapsychology. His famous essay, "The Doctor, His Patient, and the Illness," is here along with important accounts of Pavlov, Sandor Ferenczi, the Marquis de Sade, and Geza Roheim.