"There 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 …"

"Having thus assumed the motions which I ascribe to the earth, I have, after long and careful investigation, finally discovered that, if the motions of the other planets be related to the revolution of…"

"For the universe, wrought for us by the best and most orderly Workman of all, is a wonderful work."

"For it is manifest that the movements of the planets are not uniform, but sometimes faster, sometimes slower, sometimes direct, sometimes retrograde."

"For it is clear that the earth performs a double motion: one about its axis, and another about the sun."