In other words, we can understand God only by relativizing Him. There are other cases where we understand something invisible through the idea of a structure. These examples show that it is possible to understand the invisible mind by speaking of it as if it were a structured thing. In the same way, it is possible for us to obtain a certain understanding of God, who transcends time and space, by describing Him as if He were a spacio-temporal being with a certain structure. When the Sungsang and Hyungsang of God form a reciprocal relationship, there occurs between them an action of giving and receiving certain elements or forces.
Heart is the source of love, and love is harmonious.
Rather, it is a harmonious action. The relationship between the Sungsang and the Hyungsang is that of subject and object. In short, the subject is in the position to exercise dominion, whereas the object is in the position to receive dominion. The reception of dominion by the Hyungsang means that the Hyungsang, which has unlimited potentiality, assumes certain forms and qualities in accordance with the activity of the Sungsang. The relationship between Yang and Yin is that of subject and object, resembling that between Sungsang and Hyungsang.