The predominance of rationality in St. Thomas would evoke an equally powerful counterposition in the unconscious psyche, which, to compensate his ‘universalist’ thinking, would reach down to the depths of the psychic past and activate the corresponding archetypal contents.
Von Franz applies Jungian compensation theory directly to Aquinas, arguing that his extreme scholastic rationalism necessarily constellated an equally extreme unconscious counter-movement of archetypal imagery.
, Aurora Consurgens: A Document Attributed to Thomas Aquinas on the Problem of Opposites in Alchemy, 1966thesis