Galilei, Galileo, The systems of the world, 1661

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              <s>
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              from this to the other yet bigger of
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              Saturn,
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              whoſe period is of
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              thirty years, it is neceſſary, I ſay, that you paſſe to another
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              Sphere incomparably greater ſtill than that, and make this to
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              compliſh an entire revolution in twenty four hours. </s>
              <s>And this yet is
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              the leaſt diſorder that can follow. </s>
              <s>For if any one ſhould paſſe
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              from the Sphere of
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              Saturn
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              to the Starry Orb, and make it ſo
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              much bigger than that of
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              Saturn,
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              as proportion would require, in
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              reſpect of its very ſlow motion, of many thouſands of years, then
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              it muſt needs be a
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              Salt
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              much more abſurd, to skip from this to
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              another bigger, and to make it convertible in twenty four hours.
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              </s>
              <s>But the motion of the Earth being granted, the order of the
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              riods will be exactly obſerved, and from the very ſlow Sphere of
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              Saturn,
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              we come to the fixed Stars, which are wholly
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              ble, and ſo avoid a fourth difficulty, which we muſt of neceſſity
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              mit, if the Starry Sphere be ſuppoſed moveable, and that is the
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              immenſe diſparity between the motions of thoſe ſtars themſelves;
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              of which ſome would come to move moſt ſwiftly in moſt vaſt
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              cles, others moſt ſlowly in circles very ſmall, according as thoſe
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              or theſe ſhould be found nearer, or more remote from the Poles;
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              which ſtill is accompanied with an inconvenience, as well becauſe
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              we ſee thoſe, of whoſe motion there is no queſtion to be made,
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              to move all in very immenſe circles; as alſo, becauſe it ſeems to
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              be an act done with no good conſideration, to conſtitute bodies,
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              that are deſigned to move circularly, at immenſe diſtances from
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              the centre, and afterwards to make them move in very ſmall
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              cles. </s>
              <s>And not onely the magnitudes of the circles, and
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              quently the velocity of the motions of theſe Stars, ſhall be moſt
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              different from the circles and motions of thoſe others, but
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              (which ſhall be the fifth inconvenience) the ſelf-ſame Stars
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              ſhall ſucceſſively vary its circles and velocities: For that
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              thoſe, which two thouſand years ſince were in the Equinoctial,
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              and conſequently did with their motion deſcribe very vaſt
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              cles, being in our dayes many degrees diſtant from thence, muſt
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              of neceſſity become more ſlow of motion, and be reduced to
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              move in leſſer circles, and it is not altogether impoſſible but that
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              a time may come, in which ſome of them which in aforetime had
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              continually moved, ſhall be reduced by uniting with the Pole, to
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              a ſtate of reſt, and then after ſome time of ceſſation, ſhall return
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              to their motion again; whereas the other Stars, touching whoſe
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              motion none ſtand in doubt, do all deſcribe, as hath been ſaid,
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              the great circle of their Orb, and in that maintain themſelves
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              without any variation. </s>
              <s>The abſurdity is farther enlarged (which
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                <arrow.to.target n="marg266"/>
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              let be the ſixth inconvenience) to him that more ſeriouſly
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              neth the thing, in that no thought can comprehend what ought to
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              be the ſolidity of that immenſe Sphere, whoſe depth ſo ſtedfaſtly </s>
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