If a thing can be done adequately by means of one, it is superfluous to do it by means of several; for we observe that nature does not employ two instruments [if] one suffices.
Thomas AquinasIt is a sin directly against one's neighbour, since one man cannot over-abound in external riches, without another man lacking them.
Thomas AquinasGod himself would not permit evil in this world if good did not come of it for the benefit and harmony of the universe.
Thomas Aquinas