For among these, the first and chief consideration is the size of the sphere of the fixed stars, which is immense, and the next is the size of the earth, which is as a point in comparison with the heavens.
Heliocentric model of the solar system
For among these, the first and chief consideration is the size of the sphere of the fixed stars, which is immense, and the next is the size of the earth, which is as a point in comparison with the heavens.
Heliocentric model of the solar system
From 'De Revolutionibus Orbium Coelestium', Book I, Chapter 6
1543
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"For I am not so enamored of my own opinions that I would disregard what others may think of them."
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Controversial"Yet because the novelty of the undertaking, which I knew to be contrary to the accepted views of the common people, might be regarded as absurd, I long hesitated."
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