In the second section of Symbols of Transformation, Carl Jung is taking us into the life of the mystic: a path of soul and of divine heart. Jung speaks of “the teachings of the mystics,” he says:
“when they [the mystics] descend into the depths of their own being they find ‘in their heart’ the image of the sun, they find their own life-force which they call the ‘sun’ for a legitimate and, I would say, a physical reason because our source of energy and life actually is the sun. Our physiological life, regarded as an energy process, is entirely solar” (para. 176).
Jung is setting the stage for the realization of the divine energy (the God within) that dwells in the human heart. This energy is expressed in the archetypal image of the sun, it is the creative force of the living soul. If the understanding of Saint Augustin is any indication of the soul’s path, then this is a path of longing and love. Saint Augustin wrote books as prayers to God. He says:
“For Thou hast made us for Thyself and our hearts are restless till they rest in Thee” (Confessions, 398 AD).
The human heart is a restless heart. The soul’s energy, the soul’s instincts, urge us toward something beyond our comprehension– ’till they rest in Thee.’ This is the highest aim of the soul: unity, divine union.
Carl Jung, Cw 5, Symbols of Transformation (in US Pubic Domain, first published 1912)
Saint Augustine, Confessions.