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# Title: [Philosophiae Naturalis Principia Mathematica] Philosophiæ Naturalis Principia Mathematica (shelfmark Leibn. Marg. 166)
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NDMI Veteres Mechanicam (uri Auctor est Paxpus) in rerum
Naturalium investicatione maximi fecerint; e Recentiores,
missis formis substantialibus es qualitatibus occultis, Phaenomena
Naturae ad leges Mathematicas revocare areressi sint: Visum est
in hoc Tractatu Machelin excolere, quatenus ea ad Philolophiam
spectat. Mechanicam vero duplicem Veteres constituerunt: Ra
tionalem quae per Demonstrationes accurate procedit,  Practi-
CaM. Ad Practicam spectant Artes omnes Manuales, a quibus
utique Mechanica nomen muruata est. Cum autem Artisices pa
rum accurate operari soleant, fit ut Dlechanica omnis a GCoe
eria ita distinguatur, ut quicquid accuratum sit ad Geormetriamm
referatur, quicquid minus accuratum ad Mechanicam. Attamen
errores non sunt Artis sed artificum. Qui minus accurate ope-
ratur, imperfectior est Mechanicus, e si quis accuratissime ope-
rari posset, hic foret Mechanicus omnium perfectissimus. Nam es
Linearum rectarum es Circulorum descriptiones in quibus Geo-
metria fundatur, ad Mechanicam pertinent. Ilas lineas descri-
bere Geometria non docet sed postulat. Postulat enim ut Tyro
easdem accurate describere prius didicerit quam hunen attineat
Geometriae; dein quomodo per bas operationes Problemata sol
vanturs dodet. Rectas e Circulos describere Problemata sunt,
ea