Dr. Sigmund Freud (6 May 1856 – 23 Sep 1939) was a neurologist and the founder of psychoanalysis, who created an entirely new approach to the understanding of the human personality. He is regarded as one of the most influential—and controversial—minds of the 20th century. Freud developed the theory that humans have an unconscious in which sexual and aggressive impulses are in perpetual conflict for supremacy with the defenses against them. In 1897, he began an intensive analysis of himself. In 1900, his major work 'The Interpretation of Dreams' was published in which Freud analyzed dreams in terms of unconscious desires and experiences. In 1902, Freud was appointed Professor of Neuropathology at the University of Vienna, a post he held until 1938. In 1910, The International Psychoanalytic Association was founded with Carl Jung. In 1923, he published 'The Ego and the Id', which suggested a new structural model of the mind, divided into the 'id, the 'ego' and the 'superego'. Freud had been diagnosed with cancer of the jaw in 1923 and later succumbed. Less