This document summarizes Sigmund Freud's historical views on personality from a psychoanalytic perspective. It discusses Freud's view of the unconscious mind and its divisions into the id, ego, and superego. The id operates on the pleasure principle, the ego uses the reality principle, and the superego acts as the moral center. It also outlines Freud's concepts of libido, defense mechanisms like repression and rationalization, and his structural model of the mind.