Borro, Girolamo, De motu gravium et levium, 1575

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      <text>
        <body>
          <chap>
            <subchap1>
              <p type="main">
                <s id="s.000309">
                  <pb pagenum="31" xlink:href="011/01/051.jpg"/>
                  <emph type="italics"/>
                tantum relatione quadam, quod cælum rotundum ſit, & in
                  <lb/>
                abſoluti orbis ſpeciem ita efformatum, vt nihil inueniri possit
                  <lb/>
                aut rotundius, aut æque rotundum, & propterea nullam con
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                trariam partium poſitionem habeat: ideo hæc locorum inter­
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                ualla, & haſce locorum rationes ſat non eſſe cenſuit, ad gra­
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                uium, & leuium definitiones constituendas; idipſum Platoni
                  <lb/>
                adſcripſit Alcinous in libro, cui titulus eſt de dogmate Plato­
                  <lb/>
                nis capite vigeſimo: leuia ergo Plato affirmauit, quæ (vt ipſe
                  <lb/>
                loquitur) ex paucioribus triangulis
                  <expan abbr="cõponuntur">componuntur</expan>
                ; grauia, quæ
                  <lb/>
                quaſi pluribus ex triangulis fiunt, perinde ac ſi per partes
                  <lb/>
                eiuſdem generis, triangulos intelligat, nullum enim corpus,
                  <lb/>
                apud Platonem in Timæo inuenitur, quin illud ex figuris
                  <lb/>
                concretum ſit. </s>
                <s id="s.000310">Hinc Plato ſequi putat prima corpora ex pri
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                mis figuris eſſe concreta, ſed prima omnium figurarum est
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                circularis, quæ rotundo cælo, quod ad volubilitatem rotun­
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                datum est, à natura tribuitur; de quo nobis est alio loco di­
                  <lb/>
                ſputatum. </s>
                <s id="s.000311">Secunda figura est plana; & inter planas, pri­
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                ma est triangula, quæ primis illis corporibus adſcribitur; quæ
                  <lb/>
                recto motu cientur: nec omnes trianguli ſunt eodem loco
                  <lb/>
                habendi, cum illi ſint natura priores, qui rectum angu­
                  <lb/>
                lum habent, vt ſunt lſoſcheles, & Scalenus; at rectus
                  <lb/>
                angulus natura præcedit acutum, atque obtuſum: rectus
                  <lb/>
                etiam vnius naturam optimè redolet, cum nulla ratione va­
                  <lb/>
                riari queat: acutus autem, & obtuſus multis modis va­
                  <lb/>
                rientur; propter has omnes cauſas lſoſchelem, & Scale­
                  <lb/>
                num Plato elegit, vt ex illis, quas planas primas figu­
                  <lb/>
                ras cenſuit, prima elementorum corpora componeret, mo­
                  <lb/>
                do Platonis, & non Timæi Pythagorici ſit illa ſententia,
                  <lb/>
                quæ in Timæo ſcribitur, & ex libro de vniuerſitate Ti­
                  <lb/>
                mæi ad verbum transfertur: cuiuſcumque tamen ſit: feren-
                  <emph.end type="italics"/>
                </s>
              </p>
            </subchap1>
          </chap>
        </body>
      </text>
    </archimedes>
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