Gassendi, Pierre
,
De proportione qua gravia decidentia accelerantur
,
1646
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A
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C,
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bifariam diuiſum in B, partem BC tranſcurri in
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dimidio eius temporis, quo percurritur AB?
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Etenim, quæ
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ſo tuam fidem, an tua, an alterius fuerint, quæ ſunt iam
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ſuperiùs verba recitata? </
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<
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in illa Galilei Aſſumptione Paralogiſmum, & præmi
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ſeras,
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non vno modo tantum, ſed pluribus intelligi poſſe,
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quomodo velocitates ſint inter ſe, vt emenſa spatia; licet
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eadem spatia, neque eodem, neque æquali tempore percur
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rantur:
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ac tum deligens modum vnum, qui præ cæte
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ris id præſtaret, atque idcircò Aſſumptionem Paralo
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giſmi conuinceret, iſthæc met ſubieciſti verba,
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Vt ſi
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graue deſcendens per AB, tempus quodcumque inſumat, putà
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quadrantem; ac deinde BC ipſi AB æquale dimidio qua
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drante percurrat; quis neget in
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C
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duplam haberi velocita
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tem eius, quæ fuit in B? </
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<
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& dimidium eius AB eodem tempore non percurreret.
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Subinde autem quaſi re abſolutè cófecta proſequutus
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es,
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Aſſumptio igitur Galilei falſa eſt, & totæ eius ratiocinatio
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merus Paralogiſmus.
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</
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<
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<
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Propoſitionem,
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inquis,
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fal
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ſam, ac impoßibilem?
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Eſto verò, illam iam falſam, ac
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impoſſibilem agnoſeas; at tunc ſaltem veram, atque
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neceſſariam habuiſti, cùm illa ſola vſus fueris ad oſten
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dendum Paralogiſmum. </
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<
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">Nam ſi falſam quidem tunc
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quoque, ac impoſſibilem habuiſti, quomodo probaſti
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id, quod intendiſti? </
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<
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">Et, ſi ſenſiſti poſſe eam tibi, tan
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quam falſam, ac impoſſibilem negari, quanam proui
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dentia ipſam communiiſti? </
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<
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">An oſtenſurus Paralogiſ
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mum, voluiſti ſponte te exhibere paralogiſtam ridi
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culum, vt puta non alio principio, quam falſo, atque </
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