"I have been a father, and I have rejoiced in my children."

"I was measuring the heavens, now I must measure the shadows of the Earth. Though my soul was from the heavens, the shadow of my body lies here."

"Repudiating the sensible world, which he neither sees himself nor believes from those who have, the Peripatetic joins combat by childish quibbling in a world on paper, and denies the Sun shines becaus…"

"Mathematics is the alphabet with which God has written the universe."

"I would rather be a good Christian than a good astronomer."