Nicolaus Copernicus - De Revolutionibus Orbium Coelestium (1543)

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First of all, we must note that the universe is spherical.

Nicolaus Copernicus

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.

Nicolaus Copernicus

Of all things visible, the highest is the heaven of the fixed stars.

Nicolaus Copernicus