Marsilio Ficino (1433–1499), the Florentine Neoplatonist, translator of Plato and the Corpus Hermeticum, and presiding genius of the Medici Academy, occupies a position of singular importance within the depth-psychology corpus — functioning simultaneously as historical ancestor, theoretical resource, and quasi-contemporary interlocutor. Thomas Moore’s sustained engagement in The Planets Within establishes Ficino as, above all, a psychologist: one who mandated that a psychological attitude pervade all inquiry, who practiced a recognizable form of psychotherapy grounded in the disciplined cultivation of imagination, and whose cosmological architecture — planets, spiritus, anima mundi, seminal rationes — Moore reads as a coherent vocabulary for psychic life. Liz Greene approaches Ficino from the angle of fate and magical practice, identifying imagination as the key to his therapeutic astrology and crediting Charles Boer’s claim that Ficino was the first depth psychologist. James Hillman, whose Re-Visioning Psychology explicitly positions Plotino, Ficino, and Vico as precursors of archetypal psychology, provides the theoretical warrant for the entire retrieval project: Hillman’s polytheistic, soul-centered orientation places him, as Moore observes, ‘shoulder to shoulder with Ficino,’ the two engaged in a ‘mysterious dialogue across centuries.’ The central tension in the corpus is whether Ficino is best read as a historical figure or as a living resource — Moore emphatically chooses the latter.