'The Interpretation of Dreams' (1900) is one of the major works of the great Austrian scientist and founder of psychoanalytic theory, Sigmund Freud, along with 'Introduction to Psychoanalysis' (1910), 'The Psychopathology of Everyday Life' (1904), and 'The Ego and the Id' (1923). Freud demonstrated that dreams are not nonsense, but a distorted, disguised fulfillment of a repressed desire. This famous book, which has seen countless editions, is rightfully considered one of the greatest bestsellers of the 20th century.