In 1925, while working on transcribing and illustrate what will be their Red Book, C. G. Jung gives a seminar in English in which first disclosed in public fantasies and dreams that constituted the material of the work. Jung speaks of his own "personal equation" of the formation of his psychological point of view and his subjective inclination, that is their own psychological. From the experience of what he calls his "confrontation with the unconscious" narrates the genesis of his first conceptions of the unconscious and the libido and the vicissitudes of his relationship with Freud. Apart from these autobiographical elements, the seminar sessions provide an introduction to the basics of analytical psychology, and psychological types or archetypes of the collective unconscious that Jung presented through the interpretation of clinical cases and contemporary art . Finally, the notions of anima and animus are treated with seminar participants through discussion of various novels, as She Rider Haggard. All this makes these notes an indispensable historical document for the knowledge of Jungian psychology and the personality of its creator.