Barrow, Isaac, Lectiones opticae & geometricae : in quibus phaenomenon opticorum genuinae rationes investigantur, ac exponuntur: et generalia curvarum linearum symptomata declarantur

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            <s xml:id="echoid-s8323" xml:space="preserve">
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            pro modo permanentiæ rerum in ſuo eſſe. </s>
            <s xml:id="echoid-s8324" xml:space="preserve">At enim dices: </s>
            <s xml:id="echoid-s8325" xml:space="preserve">ante res
              <lb/>
            omnes conditas annon tempus fuit? </s>
            <s xml:id="echoid-s8326" xml:space="preserve">extra mundum, ubi nihil manet,
              <lb/>
            annon tempus labitur? </s>
            <s xml:id="echoid-s8327" xml:space="preserve">reſpondeo, ſicut ante conditum mundum
              <lb/>
            fuit ſpatium, & </s>
            <s xml:id="echoid-s8328" xml:space="preserve">extra mundum nunc eſt & </s>
            <s xml:id="echoid-s8329" xml:space="preserve">quidem infinitum cui
              <lb/>
            Deus coëxiſtit) quatenus
              <unsure/>
            pe
              <unsure/>
            tuerunt olim, & </s>
            <s xml:id="echoid-s8330" xml:space="preserve">poſſunt jam exiſtere
              <lb/>
            talia tantáque corpora, quæ tum non fuerunt, aut jam non ſunt;
              <lb/>
            </s>
            <s xml:id="echoid-s8331" xml:space="preserve">ità priùs mundo, & </s>
            <s xml:id="echoid-s8332" xml:space="preserve">ſimul cum mundo (licèt extra mundum) tem-
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            pus fuit, & </s>
            <s xml:id="echoid-s8333" xml:space="preserve">eſt, quatenus ante mundum exortum potuerunt aliquæ
              <lb/>
            res in eſſe tamdiu permanere, poſſint jam extra mundum talis per-
              <lb/>
            manentiæ capaces res exiſtere; </s>
            <s xml:id="echoid-s8334" xml:space="preserve">potuit _Sol_ multo prius in lucem emer-
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            ſiſſe; </s>
            <s xml:id="echoid-s8335" xml:space="preserve">poſſit jam ille, vel alius talis ſpatiis imaginariis aſſulgere. </s>
            <s xml:id="echoid-s8336" xml:space="preserve">
              <lb/>
            Tempus igitur non actualem exiſtentiam, at capacitatem tantùm ſeu
              <lb/>
            poſſibilitatem denotat permanentis exiſtentiæ; </s>
            <s xml:id="echoid-s8337" xml:space="preserve">ſicut ſpatium capacita-
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            tem deſignat magnitudinis intercedentis. </s>
            <s xml:id="echoid-s8338" xml:space="preserve">Sed mirum, ingeres, ſe-
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            cluſo motu tempus explicari; </s>
            <s xml:id="echoid-s8339" xml:space="preserve">annon tempus motum implicat? </s>
            <s xml:id="echoid-s8340" xml:space="preserve">Mi-
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            nimé dico quoad abſolutam, & </s>
            <s xml:id="echoid-s8341" xml:space="preserve">intrinſecam naturam ſuam; </s>
            <s xml:id="echoid-s8342" xml:space="preserve">haud ma-
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            gìs quàm quietem; </s>
            <s xml:id="echoid-s8343" xml:space="preserve">à neutro temporis quantitas in ſe dependet; </s>
            <s xml:id="echoid-s8344" xml:space="preserve">ſeu
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            currant res, ſeu ſtent; </s>
            <s xml:id="echoid-s8345" xml:space="preserve">ſeu dormiamus nos, ſive vigilemus æquo
              <lb/>
            tenore tempus labitur. </s>
            <s xml:id="echoid-s8346" xml:space="preserve">Finge ſtellas omnes ab incunabulis ſuis fixas
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            perſtitiſſe; </s>
            <s xml:id="echoid-s8347" xml:space="preserve">nihil indè quicquam tempori deceſſiſſet; </s>
            <s xml:id="echoid-s8348" xml:space="preserve">tamdiu quies iſta
              <lb/>
            perdurâſſet, quamdiu motus hic eſſluxit. </s>
            <s xml:id="echoid-s8349" xml:space="preserve">Prius, poſterius, ſimul
              <lb/>
            (quoad ortus rerum & </s>
            <s xml:id="echoid-s8350" xml:space="preserve">interitus) etiam in illo tranquillo ſtatu fuiſſet
              <lb/>
            in ſe, potuiſſet à mente magìs perfecta apprehendi. </s>
            <s xml:id="echoid-s8351" xml:space="preserve">Sed prout ipſæ
              <lb/>
            magnitudines ſunt abſolutè quantæ, independenter ab omni menſuræ
              <lb/>
            reſpectu, etſi nos ipſarum quantitates niſi menſuras applicando per-
              <lb/>
            cipere nequeamus; </s>
            <s xml:id="echoid-s8352" xml:space="preserve">ità per ſe tempus quantum eſt, etſi quo temporis
              <lb/>
            quantitas a nobis dignoſcatur, advocandum ſit motûs ſubſidium, ceu
              <lb/>
            menſuræ quâ temporum quantitates æſtimemus, & </s>
            <s xml:id="echoid-s8353" xml:space="preserve">inter ſe confera-
              <lb/>
            mus; </s>
            <s xml:id="echoid-s8354" xml:space="preserve">adeóque tempus ut menſurabile motum connotat, nec enim,
              <lb/>
            ſi res omnes immotæ perſtarent, ullo pacto quantum eſſluxiſſet tem-
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            poris poſſemus internoſcere; </s>
            <s xml:id="echoid-s8355" xml:space="preserve">rerum ætas indiſcreta nobis, & </s>
            <s xml:id="echoid-s8356" xml:space="preserve">imper-
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            ceptibilis cederet. </s>
            <s xml:id="echoid-s8357" xml:space="preserve">Temporis ſſuxum non perciperemus dico? </s>
            <s xml:id="echoid-s8358" xml:space="preserve">Imo nec
              <lb/>
            aliud quippiam, at ſtupore continuo defixi ceu ſtipites conſiſteremus
              <lb/>
            aut ſaxa. </s>
            <s xml:id="echoid-s8359" xml:space="preserve">Nihil enim animadvertimus niſi quatenus aliqua mutatio ſen-
              <lb/>
            ſum aſſiciens nos interpellat, aut interna mentis operatio noſtram
              <lb/>
            conſcientiam laceſſit, ac excitat. </s>
            <s xml:id="echoid-s8360" xml:space="preserve">Ex motûs forinſecùs impellentis,
              <lb/>
            aut intra nos tumultuantis extenſione, vel intenſione diverſos rerum
              <lb/>
            gradus & </s>
            <s xml:id="echoid-s8361" xml:space="preserve">quantitates æſtimamus. </s>
            <s xml:id="echoid-s8362" xml:space="preserve">Ità motûs quantitas, in quantum
              <lb/>
            a nobis obſervari poteſt, à motûs extenſione dependet;</s>
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