This article focuses on the historical partnership between Freud and Jung in their work with psychotics, and the outlined differences from their very first mail exchanged about the role of sexuality in individual's psychic life. The debate with Fliess about sexuality is the background for the whole development of the partnership with Jung. The main hypothesis of this article is that the concept of libido was, definitely, a crucial point that had defined the way of psychoanalysis towards its conception of the casual mechanism of psychosis.
Freud and Jung; libido theory; psychosis