Scripta clarissimi mathematici M. Ioannis Regiomontani, de torqueto, astrolabio armillari, regula magna ptolemaica, baculo[que] astronomico, & observationibus cometarum, aucta necessariis, Ioannis Schoneri ... additionibus. Item observationes motuum solis, ac stellarum tam fixarum [qua ...] erraticarum. Item libellus M. Georgii Purbachii de quadrato geometrico ...

...and explanation. Nor is it credible (to omit the rest now and turn myself to this one kind) that any strength of human intellect was ever so great that it could, by its own movement and impulse, raise itself so high and to such sublime heights, to know the powers of so many stars, and to investigate such a variety of motions in celestial bodies, unless certain generous and excellent intellects had been incited by some divine spirit to inquire into things so arduous and so far removed from the common sense of men: by which favor their studies and efforts arrived at the inner sanctuaries of nature.

For Ovid says beautifully:

Happy are the souls for whom it was a concern to know these things first,
And to climb to the houses above.
It is credible that they raised their heads higher than human
Vices and jokes.
Neither Venus nor wine broke their sublime chests,
Nor the duty of the forum, nor the labor of the military.
Nor did light ambition, nor glory covered in paint,
Nor the hunger for great wealth solicit them.
They moved the distant stars to our eyes,
And placed the ether under their own intellect.

Thus in their own ages Thales of Miletus, Hipparchus, Ptolemy, and many other great men, the discoverers of these arts, committed their inventions to letters and to the memory of posterity, and by these, as if by mutual work, the mathematical arts were both informed and augmented and cultivated with miraculous success, while they transmitted their inventions to posterity with the highest faith and diligence, and these, with equal study and industry, received from their ancestors as if...