The sun, as Renan has observed, is the only truly ‘rational’ image of God, whether we adopt the standpoint of the primitive savage or of modern science. In either case the sun is the father-god from whom all living things draw life; he is the fructifier and creator, the source of energy for our world.
Jung establishes the sun as the paramount symbolic equivalent of libido and the father-God, resolving the moral split of the divine into a natural image that transcends theological dualism.
, Symbols of Transformation, 1952thesis