It vexes me when they would constrain science by the authority of the Scriptures, and yet do not consider themselves bound to answer reason and experiment.

But, because my private lectures and domestic pupils are a great hinderance and intteruption of my studies, I wish to live entirely exempt from the former, and in great measure from the latter. ... in short, I should wish to gain my bread from my writings.

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.

Wine is sunlight, held together by water.

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

Mathematics is the key and door to the sciences.

There are those who reason well, but they are greatly outnumbered by those who reason badly.