Find the best quotes by Nicolaus Copernicus.
Therefore, having obtained the opportunity from these sources, I too began to consider the mobility of the earth.
We regard it as a certainty that the earth, enclosed between poles, is bounded by a spherical surface.
Therefore I would not have it unknown to Your Holiness, the the only thing which induced me to look for another way of reckoning the…
More stars in the north are seen not to set, while in the south certain stars are no longer seen to rise.
In so many and such important ways, then, do the planets bear witness to the earth’s mobility.
Yet if anyone believes that the earth rotates, surely he will hold that its motion is natural, not violent.
Near the sun is the center of the universe.
First of all, we must note that the universe is spherical.
Therefore, in the course of the work I have followed this plan: I describe in the first book all the positions of the orbits together…
The earth also is spherical, since it presses upon its center from every direction.
Pouring forth its seas everywhere, then, the ocean envelops the earth and fills its deeper chasms.
Therefore, when I considered this carefully, the contempt which I had to fear because of the novelty and apparent absurdity of my view, nearly induced…
For a traveler going from any place toward the north, that pole of the daily rotation gradually climbs higher, while the opposite pole drops down…
For it is the duty of an astronomer to compose the history of the celestial motions through careful and expert study.
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…
So far as hypotheses are concerned, let no one expect anything certain from astronomy, which cannot furnish it, lest he accept as the truth ideas…
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…
Moreover, since the sun remains stationary, whatever appears as a motion of the sun is really due rather to the motion of the earth.
So, influenced by these advisors and this hope, I have at length allowed my friends to publish the work, as they had long besought me…
Finally we shall place the Sun himself at the center of the Universe.
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