Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
        <body>
          <chap>
            <p type="main">
              <s>
                <pb xlink:href="065/01/108.jpg" pagenum="100"/>
              velocity, to perform that, which might be done by the moderate
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              motion of one alone about its own Centre?</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg252"/>
                <emph type="italics"/>
              The firſt diſcourſe
                <lb/>
              to prove that the
                <lb/>
              diurnal motion
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              longs to the Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg253"/>
                <emph type="italics"/>
              Nature never
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              doth that by many
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              things, which may
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              be done by a few.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>I do not well underſtand, how this grand motion
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              niſieth nothing as to the Sun, as to the Moon, as to the other
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              nets, and as to the innumerable multitude of fixed ſtars: or why
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              you ſhould ſay that it is to no purpoſe for the Sun to paſs from one
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              Meridian to another; to riſe above this Horizon, to ſet beneath
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              that other; to make it one while day, another while night: the
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              like variations are made by the Moon, the other Planets, and the
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              fixed ſtars themſelves.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>All theſe alterations inſtanced by you, are nothing, ſave
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              onely in relation to the Earth: and that this is true, do but
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                <arrow.to.target n="marg254"/>
                <lb/>
              magine the Earth to move, and there will be no ſuch thing in the
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              World as the riſing or ſetting of the Sun or Moon, nor Horizons,
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              nor Meridians, nor days, nor nights; nor, in a word, will ſuch a
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              motion cauſe any mutation between the Moon and Sun, or any
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              other ſtar whatſoever, whether fixed or erratick; but all theſe
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              changes have relation to the Earth: which all do yet in ſum
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              import no other than as if the Sun ſhould ſhew it ſelf now to
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                <emph type="italics"/>
              China,
                <emph.end type="italics"/>
              anon to
                <emph type="italics"/>
              Perſia,
                <emph.end type="italics"/>
              then to
                <emph type="italics"/>
              Egypt, Greece, France, Spain,
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              merica, &c.
                <emph.end type="italics"/>
              and the like holdeth in the Moon, and the reſt of the
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              Cœleſtial Bodies: which ſelf ſame effect falls out exactly in the
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              ſame manner, if, without troubling ſo great a part of the Univerſe,
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                <arrow.to.target n="marg255"/>
                <lb/>
              the Terreſtrial Globe be made to revolve in it ſelf. </s>
              <s>But we will
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              augment the difficulty by the addition of this other, which is a
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              very great one, namely, that if you will aſcribe this
                <emph type="italics"/>
              Great
                <emph.end type="italics"/>
              Motion to
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              Heaven, you muſt of neceſſity make it contrary to the particular
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              motion of all the Orbs of the Planets, each of which without
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              controverſie hath its peculiar motion from the Weſt towards the
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              Eaſt, and this but very eaſie and moderate: and then you make
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              them to be hurried to the contrary part,
                <emph type="italics"/>
              i. </s>
              <s>e.
                <emph.end type="italics"/>
              from Eaſt to Weſt,
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              by this moſt furious diurnal motion: whereas, on the contrary,
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              making the Earth to move in it ſelf, the contrariety of motions is
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              taken away, and the onely motion from Weſt to Eaſt is
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              modated to all appearances, and exactly ſatisfieth every
                <emph type="italics"/>
                <lb/>
              menon.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg254"/>
                <emph type="italics"/>
              The diurnal
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              tion cauſeth no
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              mutation amongſt
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              the Cœleſtial
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              dies, but all
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              ges have relation
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              to the Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg255"/>
                <emph type="italics"/>
              A ſccond
                <lb/>
              firmation that the
                <lb/>
              diurnal motion
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              longs to the Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SIMPL. </s>
              <s>As to the contrariety of Motions it would import
                <lb/>
                <arrow.to.target n="marg256"/>
                <lb/>
              tle, for
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              demonſtrateth, that circular motions, are not
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              trary to one another; and that theirs cannot be truly called
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              trariety.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg256"/>
                <emph type="italics"/>
              Circular
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              ons are not
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              ry, according to
                <emph.end type="italics"/>
                <lb/>
              Ariſtotle.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Doth
                <emph type="italics"/>
              Ariſtotle
                <emph.end type="italics"/>
              demonſtrate this, or doth he not rather
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              barely affirm it, as ſerving to ſome certain deſign of his? </s>
              <s>If
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              traries be thoſe things, that deſtroy one another, as he himſelf
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              affirmeth, I do not ſee how two moveables that encounter each
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              other in a circular line, ſhould leſſe prejudice one another, than if
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              they interfered in a right line.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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