Each problem that I solved became a rule, which served afterwards to solve other problems.

Good sense is the most equitably distributed of all things because no matter how much or little a person has, everyone feels so abundantly provided with good sense that he feels no desire for more than he already possesses.

Although my knowledge grows more and more, nevertheless I do not for that reason believe that it can ever be actually infinite, since it can never reach a point so high that it will be unable to attain any greater increase.

It is to the body alone that we should attribute everything that can be observed in us to oppose our reason.

Mathematics is a more powerful instrument of knowledge than any other that has been bequeathed to us by human agency.

There is a great difference between mind and body insomuch as body is by nature always divisible, and the mind is entirely indivisible.

In God there is an infinitude of things which I cannot comprehend, nor possibly even reach in any way by thought; for it is the nature of the infinite that my nature, which is finite and limited, should not comprehend it.