Theories of the World from Antiquity to the Copernican Revolution Quotes

“For if one were to suppose that the stars’ motion takes place in a straight line towards infinity, as some people have thought, what device could one conceive of which would cause each of them to appear to begin their motion from the same starting-point every day? How could the stars turn back if their motion is towards infinity? Or, if they did turn back, how could this not be obvious? [On such a hypothesis], they must gradually diminish in size until they disappear, whereas, on the contrary, they are seen to be greater at the very moment of their disappearance, at which time they are gradually obstructed and cut off, as it were, by the earth’s surface.”
― Michael J. Crowe, Theories of the World from Antiquity to the Copernican Revolution