The four fundamental constituents of the human psyche during incarnate life. The Faculties are: the active, Lunar force of Will and its focus or target, the Mask, and the active, Solar force of Creative Mind and its focus, the Body of Fate. The Faculties are all, however, Lunar in relation to the Principles, and, unlike the Principles, they are creative but incapable of attaining understanding: ‘Man can embody truth, but he cannot know it'. The Faculties are not intrinsically hierarchical, and are arranged around the circle of Wheel in rough equality, although during any particular incarnation, one or more Faculties may be stronger.