"AN act of love always tends towards two things; to the good that one wills, and to the person for whom one wills it: since to love a person is to wish that person good. Hence, inasmuch as we love ourselves, we wish ourselves good; and, so far as possible, union with that good. So love is called the unitive force.... And by the fact that anyone loves another, he wills good to that other. Thus he puts the other, as it were, in the place of himself; and regards the good done to him as done to himself. So far love is a binding force, since it aggregates another to ourselves, and refers his good to our own. And then again the divine love is a binding force, inasmuch as God wills good to others..."
~St. Thomas Aquinas: S.T. Ia. q. 20, a. 1, ad 3.
