Finally we shall place the Sun himself at the center of the Universe. All this is suggested by the systematic procession of events and the harmony of the whole Universe, if we only face the facts, as they say, "with both eyes open."

Ipse denicb Sol medium mudi putabitur possidere quae omnia ratio ordinis, quo illa sibi inuicem succedunt, et mudi to itus harmonia nos docet, si modo rem ipsam ambobus (ut aiut) oculis inspiciamus.

Nicolaus Copernicus

On the Revolutions of the Heavenly Spheres

Authentication Score 3

Original Citation

Copernicus, Nicolaus. De revolutionibus orbium coelestium [On the Revolutions of the Heavenly Spheres]. Nuremburg: Johannes Petreius, 1543, bk. 1, ch. 9.

Current Citation

Copernicus, Nicolaus. On the Revolutions of Heavenly Spheres. Prometheus, 1995, bk. 1, ch. 9.