Nicolaus Copernicus — "The Sun is the center of the universe, and all the planets revolve around it."

"It is not incredible that the earth moves, but that it stands still, that is incredible."

"I have been so long in preparing this work that I have almost despaired of publishing it."

"The Universe has been wrought for us by a supremely good and orderly Creator."

"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…"

"Therefore, when I perceived that these and similar doubts arose concerning the order of the parts of the universe and the symmetry of its structure, I began to be vexed that no more definite explanati…"