This audio book includes the works of Austrian psychologist-scientist Sigmund Freud, the founder of psychoanalysis, comprising the sixth volume of his ten-volume collected works, known as the «Educational Edition». Chronologically, it presents the theory of sexuality, which underlies all of Freud’s ideas about children’s sexuality, the development of a person’s personality, the causes of internal conflicts that generate neuroses, and the development of humankind as a whole.