Psycho-biography is an important academic field and an avenue for understanding political leaders around the world. Paul Roazen is internationally known for his pioneering work on Sigmund Freud. He has published seven books on Freud and Freudianism, including Freud: Political and Social Thought, Brother Animal: The Story of Freud and Tausk, Freud and his followers, Erik H. Erikson: The Power and Limits of a Vision and Meeting Freud"s Family.