C. G. Jung 
Collected Works of C. G. Jung, Supplementary Volume A [PDF ebook] 
The Zofingia Lectures

The authoritative edition of the revealing lectures Jung delivered during medical school
In 1895, after enrolling in the medical school of Basel University, Jung became a member of the Zofingia Society, a student fraternity to which he delivered five lectures over the next four years. Anticipating and illuminating his mature interest in empirical psychology, spiritualism, the occult, and the metaphysical, these talks confirm that Freudian psychoanalysis was a diversion in Jung’s intellectual development.