Claim. The Three Subjects Principle centers on True Parents because there is only one vertical axis of true love, and the family where True Parents meet the vertical God is the unique representative standard from which the heavenly nation extends.
Elaboration. SMM’s argument here is geometric: “On the perpendicular there is only one vertical line.” Because true love admits only one vertical standard, the family that joins horizontal True Parents to the vertical God becomes the singular representative standard for all other roles (1.2. The Three Subjects Principle is the philosophy of True Parents). Teachers and sovereigns are not autonomous offices but derivative — they must “follow the pattern of parental love.”
The payoff is providential: when teacher and sovereign roles model themselves on parental love, they create an environment Satan’s “false love” cannot invade, opening a “realm of liberation” that constitutes the heavenly kingdom on earth. This collapses the political and educational spheres into ethics derived from family — a move with significant implications for how the UC reads church-state and pedagogy questions.
This is also where the four-position-foundation logic lurks: the vertical God meets horizontal true-parents in the family, and that meeting is what makes the family the “representative standard.” Critics in comparative-religion mode often note the structural similarity to Confucian familism but with explicit theological vertical anchoring. The claim implies that any teacher or ruler not patterned on parental love is, by construction, vulnerable to Satan’s invasion — which is a strong claim about secular institutions.