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

"Some of what these pamphlets [of astrological forecasts] say will turn out to be true, but most of it time and experience will expose as empty and worthless. The latter part will be forgotten [literal…"

"I have been a philosopher, and I have pondered the meaning of life."

"I also ask you my friends not to condemn me entirely to the mill of mathematical calculations, and allow me time for philosophical speculations, my only pleasures."

"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."