Gravesande, Willem Jacob 's
,
Physices elementa mathematica, experimentis confirmata sive introductio ad philosophiam Newtonianam; Tom. 1
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thematica, ratiocinandi methodus, hoc axiomate funda-
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ta; </
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">Pro vero habendum omne quod ſi negetur ſocietas inter
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homines deſtruitur, aut his vivendi ratio adimitur. </
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xml:space
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qua propoſitione, quæ a nemine in dubium vocari po-
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teſt, regulæ philoſophandi Newtonianæ ſecunda & </
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evidentiſſime deducuntur.</
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<
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">Niſi enim, quæ ubique obtinent ubi Experimenta inſti-
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tuere licet, pro generaliter veris habeantur, effectuſque ſimi-
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les ex cauſa ſimili oriri ponantur, quis per momentum
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temporis tranquille vivere poterit?</
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<
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">Quotidie, nequidem ad illud attendendo, ſequentia ra-
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tiocinia unuſquiſque pro indubitatis habet, & </
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s
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horum concluſiones, ſine præſentis rerum conſtitutionis
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deſtructione, in dubium vocari minime poſſe.</
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<
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">Ædificium, hodie in omnibus partibus firmiſſimum, cra-
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ſtino die ſponte non ruet: </
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">id eſt, partium corporum cohæ-
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ſiohorumque gravitas, quas, niſi interveniente cauſa extra-
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nea, nunquam mutatas vidi, aut audivi, hac nocte non
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mutabuntur; </
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">quia cauſa cohæſionis & </
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erit craſtino die ac hodie. </
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">Quod ratiocinium certum eſſe,
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niſi ex memorato principio deduci non poſſe, quis non
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videt?</
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">lapides, quæ in quacunque regione ad ædifi-
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cium conſtruendum apta ſunt, ſepoſita omni mutatione ex
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cauſa extranea, hîc tranſlata inſervire poterunt, & </
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ruina non magis ſollicitus ero, ac in prima regione incolæ
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fuiſſent, ſi non tranſlatis tignis & </
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mum conſtruxiſſent; </
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