"For it is now clear to me that there are no solid spheres in the heavens... But there really are not any spheres in the heavens.... and those which have been devised by the authors to save the appearances exist only in the imagination, for the purpose of permitting the mind to conceive the motion which the heavenly bodies trace in their course and, by the aid of geometry, to determine the motion numerically through the use of arithmetic... Of course, almost the whole of antiquity and also very many recent philosophers consider as certain and unquestionable the view that the heavens are made of a hard and impenetrable substance, that it is divided into various spheres, and that the heavenly bodies, attached to some of these spheres, revolve on account of the motion of these spheres. But this opinion does not correspond to the truth of the matter..."
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(c. 1600) in , "The Doctrine of the Spheres" Three Copernican Treatises (1939) p. 12. Also see , Copernicus And His World (1946) p. 189, where he cites Rosen.
https://en.wikiquote.org/wiki/Saving_the_appearances
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Saving the appearances
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