For what could be more beautiful than the heavens which contain all beautiful things.

For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.

In the midst of all dwells the Sun. For who could set this luminary in another or better place in this most glorious temple, than whence he can at one and the same time brighten the whole.

Moreover, since the sun remains stationary, whatever appears as a motion of the sun is really due rather to the motion of the earth.

Those things which I am saying now may be obscure, yet they will be made clearer in their proper place.

The strongest affection and utmost zeal should, I think, promote the studies concerned with the most beautiful objects, most deserving to be known.

For I am not so enamoured of my own opinions that I disregard what others may think of them.