Descartes, René
,
Renati Des-Cartes principia philosophiae
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ex hoc ſolo, quòd Deus diverſimodè moverit partes
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materiae, cúm primúm illas creavit, jamque totam
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iſtam materiam conſervet eodem planè modo eàdem
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que ratione quà priús creavit, eum etiam tantundem
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motûs in ipſà ſemper conſervare a.
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XXXVI.
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Deum eſſe primòriam
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motis cauſam: &
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eandem ſemper mo
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tûs quantitatem in
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univerſo conservare. </
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Atque ex hac eâdem immutabilitate Dei, regulae
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quádam ſive leges naturae cognoſci poſſunt, quae ſunt
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cauſae ſecundariá ac particulares diverſorum motuum,
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quos in ſingulis corporibus advertimus. </
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eſt, unamquamque rem, quatenus eſt ſimplex &
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indi
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viſa, manere, quantum in ſe eſt, in eodem ſemper ſtatu,
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nec unquam mutari niſi à cauſis externis. </
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aliqua materiae ſit quadrata, facilè nobis perſuademus
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illam perpetuò manſuram eſſe quadratam, niſi quid
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aliunde adveniat quod ejus figuram mutet. </
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non credimus illam unquam incepturam moveri, niſi
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ab aliquà cauſà ad id impellatur. </
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tio eſt, ſi moveatur, cur putemus ipſam unquam ſuâ
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ſponte,* & à nullo alio impeditam, motum illum ſuum
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eſſe intermiſſuram. </
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>Atque ideò concludendum eſt,
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quod movetur, quantum in ſe eſt, ſemper moveri. </
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quia hîc verſamur circa terram, cujus conſtitutio talis
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eſt, ut motus omnes qui propè illam fiunt, brevi ſiſtan
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tur & ſaepe ob cauſas quae ſenſus noſtros latent: ideò
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ab ineunte átate ſaepe judicavimus eos motus, qui
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à cauſis nobis ignotis ſiſtebantur, ſuà ſponte deſinere. </
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Jamque proclives ſumus ad illud de omnibus exiſti
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mandum, quod videmur in multis eite experti nempe </
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