For Jung dreams are the primary way of accessing the unconscious, a point of view quite at odds with Freud’s. For Jung, the dream is not sleep’s “guardian”: it does need to be decoded for its hidden meaning to be revealed: as with the Talmud, Jung maintains that the dream is its own commentary, and its interpretation consists in discovering its internal meaning. This gives rise to the comparative work between mythological or religious motifs, and symbolic formations that reveal their ethnology and anthropology. In this seminar (1928-1930), Jung does not limit himself to producing a theory of dreams. By means of the concrete examples that he discussed with his students, he also here presents his method and practice of reading dreams symbolically, thereby putting his immense knowledge within our reach in a style that is at once direct and remarkably engaging.