"Three contributions to the theory of sex" is an outstanding work of the famous Austrian psychoanalyst Sigmund Freud, which is devoted to the study of various aspects of sexuality. In this book, Freud analyzes the mental development of a person, the relationship between sexual and mental processes, as well as sexual preferences and conflicts. The author examines the issue of sexuality in the context of psychoanalysis and reveals important aspects of an individual's interaction with his sexual desires. This book is a must-read for those interested in psychology and sexuality, and helps to better understand the deep mechanisms of human nature.