By society we here mean active human cooperation and association. The word would in the foregoing paragraph might well read could . There were and are no other alternatives. Common observation tells us that the character of our human existence demonstrates that of the two choices open to Him, God decided to make men unequally unequal, and consequently motivate them to cooperate and so establish what we know as society. That spontaneous mechanism was a combination of the urge of self-love, plus the obvious profit from division of labor and genuine cooperation.
Men cooperate in society because it is mutually advantageous.
It is mutually advantageous to cooperate because men are unequal, different from each other. The price men must pay, according to the creation by God in order to have a cooperating society, is unequal inequalities among them. The very existence of society, as we think of a cooperating group of human beings, depends completely and absolutely on inequality . Wipe out the inequality and then no voluntary society is possible. It is not even thinkable any more.