Galilei, Galileo, The systems of the world, 1661

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    <archimedes>
      <text>
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            <pb xlink:href="065/01/105.jpg" pagenum="97"/>
            <p type="main">
              <s>SAGR. </s>
              <s>I am what ever pleaſeth
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              Salviatus,
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              but I pray you,
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              let us not ſally out into another kind of digreſſion complemental;
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              for at this time I am a Philoſopher, and in the Schools, not in the
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              Court.</s>
            </p>
            <p type="main">
              <s>SALV. </s>
              <s>Let our contemplation begin therefore with this
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              deration, that whatſoever motion may be aſcribed to the Earth,
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              it is neceſſary that it be to us, (as inhabitants upon it, and
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              quently partakers of the ſame) altogether imperceptible, and as if
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              it were not at all, ſo long as we have regard onely to terreſtrial
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              things; but yet it is on the contrary, as neceſſary that the ſame
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                <arrow.to.target n="marg245"/>
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              motion do ſeem common to all other bodies, and viſible
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              jects, that being ſeparated from the Earth, participate not of the
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              ſame. </s>
              <s>So that the true method to find whether any kind of motion
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              may be aſcribed to the Earth, and that found, to know what it
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              is, is to conſider and obſerve if in bodies ſeparated from the
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              Earth, one may diſcover any appearance of motion, which
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                <arrow.to.target n="marg246"/>
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              qually ſuiteth to all the reſt; for a motion that is onely ſeen,
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              v. </s>
              <s>gr.
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                <lb/>
              in the
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              Moon,
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              and that hath nothing to do with
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              Venus
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              or
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              Jupiter,
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                <lb/>
              or any other Stars, cannot any way belong to the Earth, or to
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              any other ſave the Moon alone. </s>
              <s>Now there is a moſt general and
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              grand motion above all others, and it is that by which the Sun,
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                <arrow.to.target n="marg247"/>
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              the Moon, the other Planets, and the Fixed Stars, and in a word,
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              the whole Univerſe, the Earth onely excepted, appeareth in our
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              thinking to move from the Eaſt towards the Weſt, in the ſpace of
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              twenty four hours; and this, as to this firſt appearance, hath no
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              obſtacle to hinder it, that it may not belong to the Earth alone,
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              as well as to all the World beſides, the Earth excepted; for the
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              ſame aſpects will appear in the one poſition, as in the other.
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              </s>
              <s>Hence it is that
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              Ariſtotle
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              and
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              Ptolomy,
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              as having hit upon this
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                <arrow.to.target n="marg248"/>
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              ſideration, in going about to prove the Earth to be immoveable,
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              argue not againſt any other than this
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              Diurnal
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              Motion; ſave onely
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              that
                <emph type="italics"/>
              Ariſtotle
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              hinteth ſomething in obſcure terms againſt another
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              Motion aſcribed to it by an
                <emph type="italics"/>
              Ancient,
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              of which we ſhall ſpeak in
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              its place.</s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg245"/>
                <emph type="italics"/>
              The motions of
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              the Earth are
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              perceptible to its
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              inhabitants.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg246"/>
                <emph type="italics"/>
              The Earth can
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              have no other
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              tions, than thoſe
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              which to us appear
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              commune to all the
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              rest of the
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              verſe, the Earth
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              excepted.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg247"/>
                <emph type="italics"/>
              The Diurnal
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              tion, ſeemeth
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              mune to all the
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              niverſe, ſave onely
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              the Earth excepted.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="margin">
              <s>
                <margin.target id="marg248"/>
              Ariſtotle
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              and
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                <lb/>
              Ptolomy
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              argue
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              gainſt the
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              nal Motion
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              buted to the Earth.
                <emph.end type="italics"/>
              </s>
            </p>
            <p type="main">
              <s>SAGR. </s>
              <s>I very well perceive the neceſſity of your illation: but
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              I meet with a doubt which I know not how to free my ſelf from,
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              and this it is, That
                <emph type="italics"/>
              Copernicus
                <emph.end type="italics"/>
              aſſigning to the Earth another
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              tion beſide the Diurnal, which, according to the rule even now laid
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              down, ought to be to us, as to appearance, imperceptible in the
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              Earth, but viſible in all the reſt of the World; me thinks I may
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              neceſſarily infer, either that he hath manifeſtly erred in aſſigning
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              the Earth a motion, to which there appears not a general
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              ſpondence in Heaven; or elſe that if there be ſuch a congruity
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              therein,
                <emph type="italics"/>
              Ptolomy
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              on the other hand hath been deficient in not
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              futing this, as he hath done the other.</s>
            </p>
          </chap>
        </body>
      </text>
    </archimedes>
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