Pouring forth its seas everywhere, then, the ocean envelops the earth and fills its deeper chasms.
Nicolaus CopernicusTherefore, in the course of the work I have followed this plan: I describe in the first book all the positions of the orbits together with the movements which I ascribe to the Earth, in order that this book might contain, as it were, the general scheme of the universe.
Nicolaus CopernicusI shall now recall to mind that the motion of the heavenly bodies is circular, since the motion appropriate to a sphere is rotation in a circle.
Nicolaus Copernicus