The Future of an Illusion
The Future of an Illusion (German: Die Zukunft einer Illusion) is a 1927 work by Sigmund Freud, the founder of psychoanalysis, in which Freud discusses religion's origins, development, and its future. He provides a psychoanalysis of religion as a false belief system.
Source: Wikipedia — The Future of an Illusion (CC BY-SA 4.0)