Fabri, Honoré, Dialogi physici in quibus de motu terrae disputatur, 1665

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            <p type="main">
              <s id="s.000176">
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              nuum rectorum arcuum decurſorum: In his, crede mihi, nulla eſt diffi­
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              cultas, ſed par vtrinque facilitas; noſter tamen modus naturæ, veritati,
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              & rationi congruit, veſter errori & fallaciis patrocinatur. </s>
              <s id="s.000177">Hic autem ac­
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              curatas revolutionum menſuras non definio, ſed illud duntaxat intendo
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              æquè facilè in noſtra hypotheſi, atque in tua, explicari illa omnia, quæ ad
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              Planetarum paſſiones ſpectant, licet noſtra hypotheſis naturæ ac rationi
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              magis congruat. </s>
              <s id="s.000178">Sed ne in hoc quidem pares eſſe videamur, per te mihi
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              liceat, quæro, rem iſtam paulò minutiùs enucleare. </s>
              <s id="s.000179">Suppone, Martem,
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              cum eo velocitatis gradu, quo velociùs Sole movetur, moveri ab ortu in
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              occaſum, haud dubiè Solem poſt ſe relinquit, & poſt aliquot revolutio­
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              nes, modò eſt in Quadraturis, modò in oppoſitione, modò in Coniunctio­
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              ne; ſit enim v.g. Sol in C, Mars in F, & vterque versùs occaſum eat, ſci­
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              licet Sol à C, versùs D, Mars ab F, versùs S ; haud dubiè Mars Solem à
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              tergo relinquit versùs ortum, atque adeò poſt aliquot revolutiones Mars
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              erit in F ; & Solem aſpiciet in B, tum in F ; poſtea in D, ac demum
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              eum aſſequetur in C, redibitque Conjunctio; Vides, vtrumque moveri
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              ſimpliciſſimo motu; Cogita duos equos in duobus circulis currentes,
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              quorum alter velociùs ſuum orbem abſoluit; Hinc Mars ſemper aſſequi­
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              tur partem ortivam diſci Solaris; hinc ſemper veſpertinus occidit He­
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              liacè, id eſt, immergitur in radios Solis, ac proinde deſinit videri; Matuti­
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              nus verò Heliacè oritur; id eſt, emergit ex radiis ſolaribus, Sole poſt ſe
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              relicto versùs ortum; ac proinde incipit videri. </s>
            </p>
            <p type="main">
              <s id="s.000180">
                <emph type="italics"/>
              Auguſtin.
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              </s>
              <s id="s.000181"> Optimè ſanè intelligo, quomodò ex diverſo velocitatis gra­
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              du, ſuppoſito etiam motu ſimpliciſſimo, vtriuſque Planetæ diverſi aſpe­
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              ctus ſequantur, & ſuppleatur vtriuſque motus ortum versùs, motu illo
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              diurno; ſed quæſo te, quomodò Apogæum & Perigæum explicabis? </s>
            </p>
            <p type="main">
              <s id="s.000182">
                <emph type="italics"/>
              Antim.
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              </s>
              <s id="s.000183"> Perſpicuè omninò; ſuppoſito enim illo velocitatis gradu,
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              quem Mars motu recto acquiſivit, eo temporis momento, quo cœpit agi
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              in orbem, ſimul vna cum Sole, retinuit tantulam inclinationem primus
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              ille impetus deorſum, ab Apogæo, ſcilicet, in quo tune erat, cum volui
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              cœpit, eamque ad inſtar motus accelerati, vſque ad mediocrem diſtan­
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              tiam, & ab hac vſque ad Perigæum ad inſtar motus retardati; atque ita
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              deinceps: Ita porrò hæc inclinatio, qua Planeta deorſum ſurſumque vi­
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              bratur, eo modo, quo dixi, attemperata eſt, vt menſura illius periodi, qua
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              ſcilicet Planeta ab Apogæo ad Apagæum redit, ſit ferè æqualis, priori pe­
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              riodo, quæ ſcilicet intercedit, ab vna Conjunctione ad aliam Conjunctio­
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              nem, ac proinde, poſito quod, Mars initio, cum primùm cœpit moveri mo­
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              tu circulari, eſſet in Apogæo & in conjunctione, neceſſatiò ſequitur oppo­
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              ſitionem fieri, cùm eſt in Perigæo, ac ſimul deinde ad Coniunctionem &
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              Apogæum redire. </s>
              <s id="s.000184">Cur autem prædictæ inclinationis ſit talis menſura, vel
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              periodus, facilè dictu eſt; poſito ſcilicet, quod Naturæ Auctor ita diſpo­
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              nere voluerit; nempe negari non poteſt, quin res ſecus eſſe potuerit, ac
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              diverſus motuum & revolutionum modus; ſed ſtatuto ſemel hoc ordi­
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              ne, finis Planetæ fuit, ita volvi, & ad Solem componere ſeſe; proportio­
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              nata igitur fuit ad hunc finem prædicta inclinatio, imò & talis medio-</s>
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