Quotes by Nicolaus Copernicus

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

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"To know that we know what we know, and to know that we do not know what we do not know, that is true knowledge."

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"In so many and such important ways, then, do the planets bear witness to the earth's mobility."

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"The earth together with its surrounding waters must in fact have such a shape as its shadow reveals, for it eclipses the moon with the arc of a perfect circle."

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