"God gives every animal the means of saving its life—why object if he gives astrology to the astronomer?"

"I have dedicated my life to the study of the heavens."

"See, I cast the die, and I write the book. Whether it is to be read by the people of the present or of the future makes no difference: let it await its reader for a hundred years, if God himself has s…"

"I have often been poor, but I have always been rich in spirit."

"I have been a solitary man, but I have found joy in my work."