A General Introduction to Psychoanalysis by Sigmund Freud is a scientific publication written in the early 20th century. 
The text outlines the fundamental concepts and methodologies of psychoanalysis through a series of lectures intended for lay readers. 
It addresses the mechanisms of the unconscious mind, the role of errors in everyday life, and the underlying impulse of sexual forces in the human psyche, offering insights into the treatment of neuroses and psychological phenomena.