Newton, Isaac, Philosophia naturalis principia mathematica, 1713

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                  <s>
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                  tranſgredi, neque prius attingere quam quantitates diminuuntur in
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                  infinitum. </s>
                  <s>Res clarius intelligetur in infinite magnis. </s>
                  <s>Si quantitates
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                  duæ quarum data eſt differentia auges ntur in infinitum, dabitur
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                  harum ultima ratio, nimirum ratio æqualitatis, nec tamen ideo da­
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                  buntur quantitates ultimæ ſeu maximæ quarum iſta eſt ratio. </s>
                  <s>Igitur
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                  in ſequentibus, ſiquando facili rerum conceptui conſulens dixero
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                  quantitates quam minimas, vel evaneſcentes, vel ultimas; cave in­
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                  telligas quantitates magnitudine determinatas, ſed cogita ſemper
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                  diminuendas ſine limite. </s>
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                  DE MOTU
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                  CORPORUM</s>
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                  SECTIO II.
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                  <s>
                    <emph type="center"/>
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                  De Inventione Virium Centripetarum.
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                  PROPOSITIO I. THEOREMA I.
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                  Areas, quas corpora in gyros acta radiis ad immobile centrum virium
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                  ductis deſcribunt, & in planis immobilibus conſiſtere, & eſſe tem­
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                  poribus proportionales.
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                  </s>
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                  <s>Dividatur tempus in partes æquales, & prima temporis parte de­
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                  ſcribat corpus vi inſita rectam
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                  AB.
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                  Idem ſecunda temporis parte, ſi
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                  nil impediret, recta
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                    <figure id="id.039.01.062.1.jpg" xlink:href="039/01/062/1.jpg" number="13"/>
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                  pergeret ad
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                  c,
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                  (per
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                  Leg. </s>
                  <s>1.) deſcribens
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                  lineam
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                  Bc
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                  æqualem
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                  ipſi
                    <emph type="italics"/>
                  AB
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                  ; adeo ut ra­
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                  diis
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                  AS, BS, cS
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                  ad
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                  centrum actis, con­
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                  fectæ forent æqua­
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                  les areæ
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                  ASB, BSc.
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                  Verum ubi corpus
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                  venit ad
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                  B,
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                  agat vis
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                  centripeta impul­
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                  ſu unico ſed mag­
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                  no, efficiatque ut
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                  corpus de recta
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                  Bc
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                  declinet & pergat
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                  in recta
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                  BC.
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                  Ipſi
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                    <emph type="italics"/>
                  BS
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                  parallela agatur
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                  cC,
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                  occurens
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                  BC
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                  in
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                  C
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                  ; & completa ſecunda
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                  temporis parte, corpus (per Legum Corol. </s>
                  <s>1.) reperietur in
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                  C,
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                  in </s>
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