CHAPTER XV.
After the comparisons which I have made of the seven first Heavens, we must now proceed to the others, which are three, as has been often stated.
I say that the Starry Heaven may be compared to Physics because of three properties, and to Metaphysics because of three others.

For it shows us of itself two visible things, such as the multitude of stars and such as the Galaxy, that white circle which the common people call the Path of St.James.It shows to us also one of the poles, and keeps the other hidden from us.

And it shows to us one movement alone from East to West; and another, which it makes from West to East, it keeps almost, as it were, hidden from us.

Therefore, in due order are to be seen, first the comparison with the Physical and then that with the Metaphysical.
I say that the Starry Heaven shows us many stars; for, according to what the wise men of Egypt have seen, even to the last star which appeared to them in the Meridian, they place there twenty-two thousand bodies of stars, of which I speak.

And in this it has the greatest similitude with Physics, if these three numbers, namely, Two, and Twenty, and Thousand, are regarded well and subtly.