Nature is written in mathematical language.

In regard to the philosophers, if they be true philosophers, i.e., lovers of truth, they should not be irritated that the earth moves. Rather, if they realize that they have held a false belief, they should thank those have shown them the truth; and if their opinion stands firm that the earth doesn't move, they will have reason to boast than be angered.

Who would dare assert that we know all there is to be known?

With regard to matters requiring thought: the less people know and understand about them, the more positively they attempt to argue concerning them.

Holy Writ was intended to teach men how to go to Heaven not how the heavens go.

Some, merely to contradict what I had said, did not scruple to cast doubt upon things they had seen with their own eyes again and again.

I would say here something that was heard from an ecclesiastic of the most eminent degree: The intention of the Holy Spirit is to teach us how one goes to heaven, not how the heavens go.