Gassendi, Pierre, De motu impresso a motore translato epistulae duae, 1642
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              tametſi velociſſimè per medium mare transferatur.
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              <s id="id.000980">At, ſi aquam illam à prora in puppim effluere, & rur­
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              ſùs ex puppi in proram refluere adnotauerit; tunc
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              eius motus cauſam inquirens, agnoſcet ipſum eſſe
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              non poſſe, niſi aut extrinſecùs corpus aliquod in im­
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              motam nauim impingatur, ipſamve alia ratione ſub­
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              agitando commoueat, & contentam aquam effluere,
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              ac refluere faciat; aut ipſa certè nauis per mare mo­
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              ueatur, & cum inæquabilitate quidem aliqua, quæ
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              eiuſdem effluxus, & refluxus ſit cauſa. </s>
              <s id="id.000981">Et quia ſi extra
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              nauim circumſpexerit, nullum extrinſecùs obſerua­
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              bit corpus, quod in nauim impingatur, aut illam ſub­
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              agitet; ideò erit, cur colligat, moueri nauim igitur, &
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              cum nonnulla quidem inæquabilitate. </s>
              <s id="id.000982">Pari autem
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              modo, cùm nos in eadem Terræ quaſi naui vehamur,
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              vnà cum ſinubus, cauitatibuſque, quaſi nauigiolis, in
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              quibus marina aqua continetur; & obſeruantes hu­
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              iuſmodi aquam continuò effluere, ac refluere, argu­
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              mentemur hunc effluxum, refluxumque eſſe aut à
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              cauſa externa, quæ Terram in æthere medio conſi­
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              ſtentem commoueat, ac ſubagitet; aut ab ipſamet
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              Terra, quæ per ætherem, cum inæquabilitate aliqua
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              moueatur: nec videamus tamen, vbi oculos circum­
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              quáque coniocerimus, vllam eſſe cauſam externam,
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              quæ impingatur, ſubagitetve; Quidni colligere poſ­
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              ſimus cauſam eſſe ipſammet Terram, quatenus poteſt
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              per ætherem, & cum aliqua quidem (vt putà iam ex­
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              poſita) inæquabilitate moueri? </s>
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              <s id="id.000983">XIII. </s>
              <s id="id.000984">Verùm his tandem modus eſto: quandò ag­
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              greſſus dicere ſolùm de imbecillitate eius argumenti, </s>
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