Sacred Texts: The Classics

Aristotle: On The Hevens: Book III: Chapter 1

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WE have already discussed the first heaven and its parts, the moving stars within it, the matter of which these are composed and their bodily constitution, and we have also shown that they are ungenerated and indestructible. Now things that we call natural are either substances or functions and attributes of substances. As substances I class the simple bodies-fire, earth, and the other terms of the series-and all things composed of them; for example, the heaven as a whole and its parts…

Aristotle: On The Hevens: Book III: Chapter 1

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