The firmament is round according to its creation, and will come to an end, and is ever ruled by its own Creator. There are stars in the seven spheres of the firmament, like firm nails in a plank, without motion of their own, except the motion of the circle in which they are. On that account they are not seen moving past each other or after each other, but they always preserve one constant, everlasting order at equal distances to and from each other. As a proof that that government is preserved by the Creator of the world, and that it will depend upon His works for ever, they observe without deception and without fail the course He ordained for them at the beginning of the world.
As a proof of that, the learned have knowledge of every natural phenomenon before it occurs, for they understand fully the motion of the stars and of the planets for every year and every month and every week and for every day and every moment. And besides they even have knowledge of the seasons before they are entered upon, knowledge of summer and autumn, winter and spring, and knowledge of everything that occurs naturally in them; and that is a sure argument to prove that He who created the world is still governing it, otherwise the things I have mentioned would have altered
Then, since we see that the exact sciences exist, and that everything else occurs definitely in its own season, regularly and without confusion according to one order, from this we know that He who created the world still orders and governs it.