Psychology is the description of the reflection of the terrestial world in the heavenly plane, or, more correctly, the description of a reflection such as we, soaked as we are in our terrestial nature, imagine it, for no reflection actually occurs, only we see earth wherever we turn.
Both the Freudian and the Platonic metaphors emphasize the considerable independence of and tension among the constituent parts of the psyche, a point that characterizes the human condition.