Unity in wills cannot be unless there is one will dominating and ruling all the rest to oneness... wills of mortals have need of a directive principle... therefore for the well-being of the world, there should be a monarchy.
Understanding that which is foreign to you is fundamental to cultivating a sense of connection and unity with one another. We are ultimately trying to accomplish the same thing, which is survival and the thriving of a better world.
...man is an analogist, and studies relations in all objects. He is placed in the center of beings, and a ray of relation passes from every other being to him. And neither can man be understood without these objects, nor these objects without man.
Consequently, heretics and schismatics, separated from the unity of this Body, are able to receive the same Sacrament, but with no benefit to themselves; indeed, more to their own harm, in that they are judged the more severely rather than being liberated.