From all of these considerations, it follows that one must neither say that the cosmos is always itself responsible for its own turning, nor say at a that it is turned by god in a pair of opposed revolutions, nor again that it is turned by some pair of gods whose thoughts are opposed to each other; it is rather what was said just now, which is the sole remaining possibility, that at times it is helped by the guidance of another, divine, cause, acquiring life once more and receiving a restored immortality from its craftsman, while at other times, when it is let go, it goes on its own way under its own power, having been let go at such a time as to travel backwards for many tens of thousands of revolutions because of the very fact that its movement combines the effects of its huge size, perfect balance, and its resting on the smallest of bases.