I answer that, As the end of a thing corresponds to its beginning, it is not possible to be ignorant of the end of things if we know their beginning. Therefore, since the beginning of all things is something outside the universe, namely, God, it is clear from what has been expounded above (Q. 44, AA. 1, 2), that we must conclude that the end of all things is some extrinsic good. This can be proved by reason. For it is clear that good has the nature of an end; wherefore, a particular end of anything consists in some particular good; while the universal end of all things is the Universal Good; Which is good of Itself by virtue of Its Essence, Which is the very essence of goodness; whereas a particular good is good by participation. Now it is manifest that in the whole created universe there is not a good which is not such by participation. Wherefore that good which is the end of the whole universe must be a good outside the universe.
Reply Obj. 1: We may acquire some good in many ways: first, as a form existing in us, such as health or knowledge; secondly, as something done by us, as a builder attains his end by building a house; thirdly, as something good possessed or acquired by us, as the buyer of a field attains his end when he enters into possession. Wherefore nothing prevents something outside the universe being the good to which it is directed.
Reply Obj. 2: The Philosopher is speaking of the ends of various arts; for the end of some arts consists in the operation itself, as the end of a harpist is to play the harp; whereas the end of other arts consists in something produced, as the end of a builder is not the act of building, but the house he builds. Now it may happen that something extrinsic is the end not only as made, but also as possessed or acquired or even as represented, as if we were to say that Hercules is the end of the statue made to represent him. Therefore we may say that some good outside the whole universe is the end of the government of the universe, as something possessed and represented; for each thing tends to a participation thereof, and to an assimilation thereto, as far as is possible.
Reply Obj. 3: A good existing in the universe, namely, the order of the universe, is an end thereof; this, however, is not its ultimate end, but is ordered to the extrinsic good as to the end: thus the order in an army is ordered to the general, as stated in Metaph. xii, Did. xi, 10. _______________________
THIRD ARTICLE [I, Q. 103, Art. 3]
Whether the World Is Governed by One?
Objection 1: It would seem that the world is not governed by one. For we judge the cause by the effect. Now, we see in the government of the universe that things are not moved and do not operate uniformly, but some contingently and some of necessity in variously different ways. Therefore the world is not governed by one.
Obj. 2: Further, things which are governed by one do not act against each other, except by the incapacity or unskillfulness of the ruler; which cannot apply to God. But created things agree not together, and act against each other; as is evident in the case of contraries. Therefore the world is not governed by one.
Obj. 3: Further, in nature we always find what is the better. But it "is better that two should be together than one" (Eccles. 4:9). Therefore the world is not governed by one, but by many.
On the contrary, We confess our belief in one God and one Lord, according to the words of the Apostle (1 Cor. 8:6): "To us there is but one God, the Father . . . and one Lord": and both of these pertain to government. For to the Lord belongs dominion over subjects; and the name of God is taken from Providence as stated above (Q. 13, A. 8). Therefore the world is governed by one.