Gassendi, Pierre, De motu impresso a motore translato epistulae duae, 1642

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      <text>
        <body>
          <chap>
            <p type="main">
              <s id="id.000396">
                <pb pagenum="40" xlink:href="027/01/047.jpg"/>
              quem aliunde eſſe exquiſitè complanatum concipias
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              Si ſupponas enim te illi vel leuiculum imprimere
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              motum; intelliges ſanè hunc motum nun quam ceſſa­
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              turum, ſed globum reuolutum iri ſecundum totum
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              ambitum, ac reuolutione peracta reuolutum iterùm
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              iri, & conſequenter iterùm, & ita continuò perſeue­
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              raturum. </s>
              <s id="id.000397">Cauſa porrô eſt, quoniam globus moueri
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              tantillum hoc modo non poteſt, quin centro exſi­
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              ſtente ſemper perpendiculari ad id punctum, quo glo­
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              bus contingit horizontale planum, tantum ſit molis
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              antè, quantum retrò, & pars anterior non poſſit
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              tendere deorſum, quin pars poſterior tendat ſurſum;
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              & illa ſemper hanc pertrahat, iſta ſemper illam pro­
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              pellat; adeò proinde, vt cùm nulla cauſa poſſit deor­
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              sùm adigere globum, quin quantum ex vna parte de­
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              primit, tantúndem eleuet ex alia, oporteat motum
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              ſemel impreſſum conſtare ſemper inter depreſſionem,
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              & eleuationem medium: atque idcircô vniformem,
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              inceſſantemque perſeuerare. </s>
              <s id="id.000398">Accedit, quòd nulla ſit
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              cauſa, quamobrem ſuum curſum vel retardet vnquam,
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              vel acceleret, quatenus nunquam magis, vel minus à
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              centro terræ abſcedit, aut ad id accedit: neque cur
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              proinde vnquam debeat à motu ceſſare, quemadmo­
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              dum fieret, ſi ſupponeres ali quam in ſuperficie in æqua­
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              bilitatem. </s>
              <s id="id.000399">Nam ſicubi decliuitas, & accliuitas foret,
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              acceleraret motum per locum decliuem, & retardaret
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              per accliuem: &, ſi tanta accliuitas eſſet, vt emergere
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              ſupra eam non poſſet, cogeretur recurrere, excurreque,
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              & poſt excurſus, recurſuſque aliquot conquieſcere
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              tandem in medio inter accliuitatem, & decliuitatem </s>
            </p>
          </chap>
        </body>
      </text>
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