We have thus proved with one stroke God's existence as well as his unity and incorporeality. But, it will be observed, if not for the twenty-sixth proposition concerning the eternity of motion, which implies an infinite power, we should not have been forced to the alternative (b), and could have adopted (c) as well as (d). That is, we might have concluded that God is the soul of the heavenly sphere resident within it, or even that he is a corporeal force pervading the extension of the sphere as heat pervades an ordinary body. But we must admit that in this way we prove only the existence of a God who is the cause of the heavenly motions, and through these of the processes of genesis and decay, hence of all the life of our sublunar world. This is not the God of Jewish tradition, who creates out of nothing, who is the cause of the being of the universe as well as of its life processes. Maimonides was aware of this defect in the Aristotelian view, and he later repudiates the Stagirite's theory of eternal motion on philosophical as well as religious grounds. Before, however, we speak of Maimonides's attitude in this matter, we must for completeness' sake briefly mention three other proofs for the existence of God as given by Maimonides. They are not strictly Aristotelian, though they are based upon Peripatetic principles cited above and due to the Arabian commentators of Aristotle. The second proof is as follows. If we find a thing composed of two elements, and one of these elements is also found separately, it follows that the other element is found separately also. Now we frequently find the two elements of _causing motion_ and _being moved_ combined in the same object. And we also find things which are moved only, but do not cause motion, as for example matter, or the stone in the last proof. It stands to reason therefore that there is something that causes motion without being itself subject to motion. Not being subject to motion, it is indivisible, incorporeal and not subject to time, as above.