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Chnftianiflimo ac potentifi. galliarvm regi, francisco hvivs nominis primo,Orontius Fin^us Delphinas, ^S. D.Vm celebres ill^s & fidiflimas artes, Fran^ )cifce Rex inuidiflime, quae folae Mache^ maticae,hoc efl:,di{ciplin^ meruerunt ad^ pellari, fub tuo felici profiterer nomine: Jraros admodum offendi (etiam in nume* Irofa auditoru multitudine ) qui fatis fido ac liberali animo,tam vtile ac iucundum philofophandi genus,Himine (vt aiunt) I falutare,ne dicam ad illius penetralia, pe=: ' nitioraq; fecreta, peruenire dignarentur. Cuius adeo mifer^ ac deploranda infelicitatis radice ex eo,maxime puU lulare vel facile percepi: quod fiue inclementia teporis, fiue parentum 6<: preceptorum incuria,Geometrice nufquam prxguftauerint elemen=* ra.fine quorum pr^uia,ac exada cognitione : omnis prorfus , nedum Mathematica , negatur philofophia. Perfcrutatur enim Geometria continua,& prout immobilis eft,quantitatis accidentiarnempe magnis tudinum, &: figurarum rationes,affediones item, pofitionefque diuer^ fas: multiformia ipfarum difcrimina fubtili admodum examine difcu--:/ tiendo.Exordium prseterea fumit,a per fefe,&: vulgo notis principi)s.&: potiffimis Dialedices innixa pr^ceptis, ac colleda fyllogifmisiad ^ris ma demonftrationum infurgit elementa, a quibus per mediorum or^ dinem difcurrendo,atque fimplicia compofitis, & compofita fimplici^ bus comparando,progreditur ad vltima:ad propria tandem fingula re^ foluendo principia. C^anquam infuper circa intelledilia & abftrada, quemadmodum Sc diuina verfeturphilofophiarfenfilia tame &: ipfi ma* terias fubieda,veluti phyfica ratiocinatio, fimul attingere coijnperitur.Et proinde fit, vt nulla difciplina certior exiftat Geometria: vel quse illam antiquitatis dignitate procellat. Nulla etiam qu^ vires ingeni) magisfoueat, augeat, locupletetque : vel qus ingenium ipfum ad pus riora ftudia, omniumque ingenuarum adinuentionu excogitationem, adeo facile reddat,ac fuapte natura propefum. Adde qubd vfuij&r com=! modo generis humani plurimum cedit.Flinc pr^clara illa & toti Orbi decora liberalium artiu facultas,c^teraru mater alumna,ad veterum j^.i/.philofophofum imitatione, prudetiffimafinciuitinftitutionemequii^ piam in dodtorum, feuCvt vocanOmagiftrorum admittatur ordinem, ni cu ceteris philofophici difcurfus authoribus, fex priores libros gep=j metricorum elementorum Euclidis faltem audiuerit. quafi ignoratis Geometrise rudimentis,ad ceteras difeiplinas prxclufa videatur effe via. Cuius rei veft:igia,Parifiefis adhuc obferuat academia.Qui enim ad lau^ ream adfpirant philolbphicam; iureiurando profitentur ard:iffimo,fefe pr^nominatos Euclidis libros audiuifle. An vero illius elementa,multis ab hinc annis,vfque ad noftra viderintCne dicam intellexerint)tempos ra Cpaucis forfitan exceptis,quos aequus amauit lupiter) no aufim ho=* nefte confiteri.Noueruntenim finguli,etiam exteritquibus deliramen^ tis non modb foecundiflima iuuenum ingenia hadrenus torferint,aG pe=: ne dixerim deprauarint pfeudophilofophi, verumetiam omnem bonam extinxerint eruditionem. Redit tamen fuus fingulis honos,fuaque...