Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="065/01/036.jpg" pagenum="30"/>
              is corrupted, reſides it in the ſame Earth or in ſome other bodie,
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              which muſt either be the Air or Water? </s>
              <s>I believe you will grant,
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              that like as the Motions upwards and downwards, and gravity
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              and levity, which you make the firſt contraries, cannot be in the
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              ſame Subject, ſo neither can moiſt and dry, hot and cold: you
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              muſt therefore conſequently acknowledg that when a bodie
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                <arrow.to.target n="marg88"/>
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              rupteth, it is occaſioned by ſome quality reſiding in another
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              trary to its own: therefore to make the Cœleſtial Body become
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              corruptible, it ſufficeth that there are in Nature, bodies that have
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              a contrariety to that Cœleſtial body; and ſuch are the Elements,
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              if it be true that corruptibility be contrary to incorruptibility.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg88"/>
                <emph type="italics"/>
              Contraries which
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              are the cauſes of
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              corruption, reſide
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              not in the ſame
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              dy that corrupteth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>This ſufficeth not, Sir; The Elements alter and
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              rupt, becauſe they are intermixed, and are joyn'd to one another,
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                <arrow.to.target n="marg89"/>
                <lb/>
              and ſo may exerciſe their contrariety; but Cœleſtial bodies are
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              ſeparated from the Elements, by which they are not ſo much as
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              toucht, though indeed they have an influence upon the Elements.
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              </s>
              <s>It is requiſite, if you will prove generation and corruption in
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              leſtial bodies, that you ſhew, that there reſides contrarieties
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              tween them.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg89"/>
                <emph type="italics"/>
              Cœleſtial Bodies
                <lb/>
              touch, but are not
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              touched by the
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              lements.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>See how I will find thoſe contrarieties between them.
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              </s>
              <s>The firſt fountain from whence you derive the contrariety of the
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              Elements, is the contrariety of their motions upwards and
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              wards: it therefore is neceſſary that thoſe Principles be in like
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                <arrow.to.target n="marg90"/>
                <lb/>
              manner contraries to each other, upon which thoſe motions
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              pend. </s>
              <s>and becauſe that is moveable upwards by lightneſs,
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              and this downwards by gravitv, it is neceſſary that lightneſs and
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              gravity are contrary to each other: no leſs are we to believe thoſe
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              other Principles to be contraries, which are the cauſes that this is
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              heavy, and that light: but by your own confeſſion, levity and
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              gravity follow as conſequents of rarity and denſity; therefore
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                <arrow.to.target n="marg91"/>
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              rarity and denſity ſhall be contraries: the which conditions or
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              affections are ſo amply found in Cœleſtial bodies, that you
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              ſteem the ſtars to be onely more denſe parts of their Heaven:
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              and if this be ſo, it followeth that the denſity of the ſtars exceeds
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              that of the reſt of Heaven, by almoſt infinite degrees:
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              which is manifeſt, in that Heaven is infinitely tranſparent, and
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              the ſtars extremely opacous; and for that there are there above
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              no other qualities, but more and leſs denſity and rarity, which
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              may be cauſes of the greater or leſs tranſparency. </s>
              <s>There being
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              then ſuch contrariety between the Cœleftial bodies, it is neceſſary
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              that they alſo be generable and corruptible, in the ſame manner
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              as the Elementary bodies are; or elſe that contrariety is not the
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                <arrow.to.target n="marg92"/>
                <lb/>
              cauſe of corruptibility,
                <emph type="italics"/>
              &c.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg90"/>
                <emph type="italics"/>
              Gravity & levity,
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              varity and denſity,
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              are contrary
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              lities.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg91"/>
                <emph type="italics"/>
              The ſtars infinitely
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              ſurpaſs the
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              ſtance of the reſt of
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              Heaven in denſity.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg92"/>
                <emph type="italics"/>
              Rarity & denſity
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              in Cœleſtial bodies,
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              is different from
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              the rarity &
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              ſity of the elements.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>There is no neceſſity either of one or the other, for
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              that denſity and rarity in Cœleſtial bodies, are not contraries to </s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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