Within the depth-psychology corpus, ‘semen’ operates at several distinct registers simultaneously: as a biological substance whose ancient theorization encoded patriarchal metaphysics; as a symbolic vehicle for pneuma, soul, and generative power; as a ritual substance in ethnographic and alchemical contexts; and as a psychophysiological correlate of vitality, spirit, and even prophetic capacity. Hillman’s sustained critique in The Myth of Analysis reveals how the ancient hierarchy of male over female seed — from Aristotle through Aquinas — functioned not as empirical science but as fantasy in service of a worldview, with semen bearing the ‘concocted,’ pneumatic, white superiority attributed to the masculine. Onians traces semen’s identification with cerebro-spinal substance back through Greek, Latin, and Vedic sources, linking it to the head as the seat of life and procreative genius. Plato’s Timaeus grounds semen in marrow running from brain to spine, making it literally the medium of soul. Daoism, as represented in Kohn’s handbook, treats semen as concentrated vital force whose retention or emission is decisive for spiritual cultivation. Turner and Victor Turner locate semen (‘ntoro’) within ritual and communitas symbolism across African societies. Jung and the alchemical tradition figure the solar sulphur as ‘semen virile’ — a formative, paternal, active substance. The term thus concentrates questions of gender, soul, vitality, cosmos, and the politics of biological theory.