For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.
Nicolaus CopernicusThere may be babblers, wholly ignorant of mathematics, who dare to condemn my hypothesis, upon the authority of some part of the Bible twisted to suit their purpose. I value them not, and scorn their unfounded judgment.
Nicolaus CopernicusThose who know that the consensus of many centuries has sanctioned the conception that the earth remains at rest in the middle of the heavens as its center, would, I reflected, regard it as an insane pronouncement if I made the opposite assertion that the earth moves.
Nicolaus CopernicusMore stars in the north are seen not to set, while in the south certain stars are no longer seen to rise.
Nicolaus Copernicus