Galilei, Galileo, The systems of the world, 1661

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              <s>
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              diſtinct that can be poſſible; and excuſe me
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              Sagredus,
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              if haply
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              with ſome tediouſneſs you hear me oft repeat the ſame things,
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              and fancie that you ſee me reaſſume my argument in the
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              lick circle of Diſputations. </s>
              <s>You ſay Generation and
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              on are onely made where there are contraries; contraries
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              are onely amongſt ſimple natural bodies, moveable with contrary
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              motions; contrary motions are onely thoſe which are made by
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              a right line between contrary terms; and theſe are onely two,
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              that is to ſay, from the
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              medium,
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              and towards the
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              medium
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              ; and
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              ſuch motions belong to no other natural bodies, but to the
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              Earth,
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              the
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              Fire,
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              and the other two Elements: therefore Generation
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              and Corruption is onely amongſt the Elements. </s>
              <s>And becauſe
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              the third ſimple motion, namely, the circular about the
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              medium,
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              hath no contrary, (for that the other two are contraries, and one
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              onely, hath but onely one contrary) therefore that natural body
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              with which ſuch motion agreeth, wants a contrary; and having
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              no contrary is ingenerable and incorruptible, &c. </s>
              <s>Becauſe where
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              there is no contrariety, there is no generation or corruption,
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              &c.
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              But ſuch motion agreeth onely with the Cœleſtial bodies;
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                <arrow.to.target n="marg81"/>
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              fore onely theſe are ingenerable, incorruptible,
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              &c.
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              And to
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              begin, I think it a more eaſie thing, and ſooner done to reſolve,
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              whether the Earth (a moſt vaſt Body, and for its vicinity to us,
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              moſt tractable) moveth with a ſpeedy motion, ſuch as its
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              lution about its own axis in twenty four hours would be, than it
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              is to underſtand and reſolve, whether Generation and Corruption
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              ariſeth from contrariety, or elſe whether there be ſuch things as
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              generation, corruption and contrariety in nature. </s>
              <s>And if you,
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                <emph type="italics"/>
              Simplicius,
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              can tell me what method Nature obſerves in working,
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              when ſhe in a very ſhort time begets an infinite number of flies
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              from a little vapour of the Muſt of wine, and can ſhew me which
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              are there the contraries you ſpeak of, what it is that corrupteth,
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              and how; I ſhould think you would do more than I can; for I
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              profeſs I cannot comprehend theſe things. </s>
              <s>Beſides, I would
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              ry gladly underſtand how, and why theſe corruptive contraries are
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              ſo favourable to Daws, and ſo cruel to Doves; ſo indulgent to
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              Stags, and ſo haſty to Horſes, that they do grant to them many
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              more years of life, that is, of incorruptibility, than weeks to theſe.
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              </s>
              <s>Peaches and Olives are planted in the ſame ſoil, expoſed to the
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              ſame heat and cold, to the ſame wind and rains, and, in a word,
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              to the ſame contrarieties; and yet thoſe decay in a ſhort time,
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              and theſe live many hundred years. </s>
              <s>Furthermore, I never was
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              thorowly ſatisfied about this ſubſtantial tranſmutation (ſtill
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              ing within pure natural bounds) whereby a matter becometh ſo
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              transform'd, that it ſhould be neceſſarily ſaid to be deſtroy'd, ſo
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              that nothing remaineth of its firſt being, and that another body </s>
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