At rest, however, in the middle of everything is the sun.

Pouring forth its seas everywhere, then, the ocean envelops the earth and fills its deeper chasms.

Therefore, having obtained the opportunity from these sources, I too began to consider the mobility of the earth.

I 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.

Those 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.

Finally we shall place the Sun himself at the center of the Universe.

More stars in the north are seen not to set, while in the south certain stars are no longer seen to rise.