Note 7 — Chapter I · The Development of Astronomical Thought to 1400 A.D. A Preliminary Sketch of Early Theories as a Background.
Reading edition
Aristotle: De Mundo, c. 2 et 6 (III, 628 and 636).
Reading edition
Aristotle: De Mundo, c. 2 et 6 (III, 628 and 636).