In the late 19th century Viennese neurologist Sigmund Freud developed a theory of personality and a system of psychotherapy known an psychoanalysis. According to this theory, people are strongly influenced by unconscious forces, including innate sexual and aggressive drives. In this 1938 British Broadcasting Corporation interview, Freud recounts the early resistance to his ideas and later acceptance of his work. Freud�s speech is slurred because he was suffering from cancer of the jaw. He died the following year.
