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Sigmund Freud (1856-1939) is one of the twentieth century's greatest minds and the founder of the psychoanalytic school of psychology. His many works include The Ego and the Id; An Outline of Psycho-Analysis; Inhibitions; Symptoms and Anxiety; New Introductory Lectures on Psycho-Analysis; Civilization and Its Discontent, and others. Peter Gay (1923-2015) was the author of more than twenty-five books, including the National Book Award winner The Enlightenment, the best-selling Weimar Culture, and the widely translated Freud: A Life for Our Time.