Planets move in ellipses with the Sun at one focus.

I had the intention of becoming a theologian...but now I see how God is, by my endeavors, also glorified in astronomy, for 'the heavens declare the glory of God.'

Geometry is one and eternal shining in the mind of God. That share in it accorded to men is one of the reasons that Man is the image of God.

The Earth is round, and is inhabited on all sides, is insignificantly small, and is borne through the stars.

It is a right, yes a duty, to search in cautious manner for the numbers, sizes, and weights, the norms for everything [God] has created. For He himself has let man take part in the knowledge of these things ... For these secrets are not of the kind whose research should be forbidden; rather they are set before our eyes like a mirror so that by examining them we observe to some extent the goodness and wisdom of the Creator.

Nature loves simplicity and unity.

...for a long time I wanted to become a theologian... now, however, behold how through my efforts God is being debated in astronomy.