And so, in the first book, I describe the earth's general position and its various motions, and then I pass to the other planets, showing how their motions are related to the earth's.
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"To attribute the motion of the earth to the sun is as absurd as to attribute the motion of the sun to the earth."
"For it is the duty of an astronomer to compose the history of the celestial motions from a careful and skillful study of the observations."
"Perhaps there will be babblers who, although completely ignorant of mathematics, nevertheless dare to pass judgment on these things, and because of some passage in Holy Scripture, want to distort my b…"
"First of all, the world is spherical. This is because the sphere is the most perfect figure of all, and it is the form of the world."
"The Sun is the center of the universe, and all the planets revolve around it."
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