In creating the world, God used arithmetic, geometry, and likewise astronomy.

It has been asserted that there is a separate species on the earth to correspond with each one of the stars. Now if the earth provides in each species a focus for the action of each star, why may not a similar provision be made among other heavenly bodies that are subject to the action of their fellows?

For reason's measurements, which attain unto temporal things, do not attain unto things that are free from time-just as hearing does not attain unto whatever is not-audible, even though these things exist and are unattainable by hearing.

A given circle cannot be so true that a truer one cannot be found; and the movement of a sphere at one moment is never precisely equal to its movement at another, nor does it ever describe two circles similar and equal, even if from appearances the opposite may seem true.

If, therefore, man has come into the world to search for God and, if he has found Him, to adhere to Him and to find repose in adhering to Him-man cannot search for Him and attain Him in this sensible and corporeal world, since God is spirit rather than body, and cannot be attained in intellectual abstraction, since one is able to conceive nothing similar to God, as he asserts-how can one, therefore, search for Him in order to find Him?

The fact is that man has no longing for any other nature but desires only to be perfect in his own.

In humility alone lies true greatness, and knowledge and wisdom are profitable only in so far as our lives are governed by them.