Scripture is a book about going to Heaven. It's not a book about how the heavens go.

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

Knowing thyself, that is the greatest wisdom.

It reveals to me the causes of many natural phenomena that are entirely incomprehensible in the light of the generally accepted hypotheses. To refute the latter I collected many proofs, but I do not publish them ... I would dare to publish my speculations if there were people men like you.

If you could see the earth illuminated when you were in a place as dark as night, it would look to you more splendid than the moon.

I abjure with a sincere heart and unfeigned faith, I curse and detest the said errors and heresies, and generally all and every error and sect contrary to the Holy Catholic Church.

By denying scientific principles, one may maintain any paradox.