Galilei, Galileo
,
The systems of the world
,
1661
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ther built thereon. </
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<
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>I deny not, that this which
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Ariſtotle
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hitherto
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hath introduced, with a general diſcourſe dependent upon
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ſal primary principles, hathbeen ſince in proceſs of time, re-inforced
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with particular reaſons, and experiments; all which it would be
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neceſſary diſtinctly to conſider and weigh; but becauſe what hath
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been ſaid hitherto preſents to ſuch as conſider the ſame many and
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no ſmall difficulties, (and yet it would be neceſſary, that the
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mary principles and fundamentals, were certain, firm, and
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ed, that ſo they might with more confidence be built upon) it
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would not be amiſs, before we farther multiply doubts, to ſee if
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haply (as I conjecture) betaking our ſelves to other waies, we may
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not light upon a more direct and ſecure method; and with better
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conſidered principles of Architecture lay our primary
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tals. </
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<
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>Therefore ſuſpending for the preſent the method of
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tle,
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(which we will re-aſſume again in its proper place, and
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cularly examine;) I ſay, that in the things hitherto affirmed by
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him, I agree with him, and admit that the World is a body
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ing all dimenſions, and therefore moſt perfect; and I add, that as
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ſuch, it is neceſſarily moſt ordinate, that is, having parts between
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themſelves, with exquiſite and moſt perfect order diſpoſed; which
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aſſumption I think is not to be denied, neither by you or any
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other.</
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The circular line
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perfect, according
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to
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Ariſtotle,
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and
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but the right
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perfect, and why.
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</
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The world is
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poſed by the
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thor to be perfectly
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ordinate.
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<
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>SIMPL. </
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<
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>Who can deny it? </
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<
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>the firſt particular (of the worlds
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dimenſions) is taken from
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Ariſtotle
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himſelf, and its
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on of ordinate ſeems onely to be aſſumed from the order which it
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moſt exactly
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</
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Streight motion
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impoſſible in the
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world exactly
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dinate.
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</
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<
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<
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>SALV. </
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<
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>This principle then eſtabliſhed, one may immediately
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conclude, that if the entire parts of the World ſhould be by their
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nature moveable, it is impoſſible that their motions ſhould be
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right, or other than circular; and the reaſon is ſufficiently eaſie,
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and manifeſt; for that whatſoever moveth with a right motion,
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changeth place; and continuing to move, doth by degrees more
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and more remove from the term from whence it departed, and
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from all the places thorow which it ſucceſſively paſſed; and if
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ſuch motion naturally ſuited with it, then it was not at the
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ginning in its proper place; and ſo the parts of the World were
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not diſpoſed with perfect order. </
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<
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>But we ſuppoſe them to be
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fectly ordinate, therefore as ſuch, it is impoſſible that they ſhould
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by nature change place, and conſequently move in a right moti</
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<
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on. </
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<
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>Again, the right motion being by nature infinite, for that
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the right line is infinite and indeterminate, it is impoſſible that
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<
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any moveable can have a natural principle of moving in a right
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line; namely toward the place whither it is impoſſible to arrive,
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there being no præ-ſinite term; and nature, as
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Ariſtotle
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himſelf
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ſaith well, never attempts to do that which can never be done, </
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