Liber
ſeruatiua. vl̓ ab eſſe diſſolutiua vtdicit calcidius ſuꝑ tymeū. vite etꝑmanentie cuiuſlibet rei regitiuaeſt lux et directiua. ſui ip̄ius naturalit̓ multiplicatiua. Lux enī ml̓tiplicat ſe gignēdo. gignit nāqꝫ luxlucē. et lux genita ſiml̓ gignit̉ ⁊ generat lucē ſibi ſuccedentē. et ſic invno inſtāti vnꝰ punctus. replet lumine totū orbē ¶ Itē lux eſt ſui etalioꝝ manifeſtatiua. coloꝝper ſuiincorꝑationē in ſuꝑficie humidi ꝑſpicui effectiua Sic̄ dicit augꝰ luxtenebras expellit. meroresqꝫ diſſoluit. inſidias ꝓdit. ſecuritatē parit. om̄eꝫ ſpem letā iocundāqꝫ inducit. rebus oībus formā et decorem tribuit et inducit. qͥa ſine luceomnia corꝑa occulta remanent etignota Aufer inqͥt dam̄. lucem etom̄ia in tenebris incognita ꝑmanebūt ¶ Lux igit̉ ẜm amb̓. et etiāẜm baſili. eſt pulcritudo om̄is viſibilis creature. cuiꝰ gr̄a maxīa eſtin aſpectu que cete̓a mūdi mēbralaudibꝰ efficit digna Hec vt dicitbaſiliꝰ idē eſt āgeloꝝ. et ſc̄oꝝ ſupͣcelū quietiſſima habitatō Hec ſūme t̓nitatis per exemplū ē demonſtratio manifeſta. Hec lux ſine diminutione ſui eſt lumioſitatis manifeſtatiua ⁊ diffuſiua. q̄ in ſuperficie vmbroſi corꝑis recepta nō ſeꝓfundat qͣntū ad viſibilē ſpēm ſꝫquo ad ꝟtutē vt dic̄ yſi. ¶ Ml̓tasalias ꝓprietates laude dignas hꝫlux. quo ad ſuā ſb̓am ꝟtutē ⁊ oꝑationē. cuiꝰ ſb̓ſtātia nihil inueniturpurius. vn̄ trāſiens per ſordes nōſordeſcit. cuiꝰ ꝟtute nihil ē actua-
Octauuslius. cuius oꝑatione nihil vtiliusin corporibus reperit̉.Ca xxx. de SplendorePlēdor eſt quidā defluxꝰexiens a ſb̓a lucis. Egredit̉ aūt a luce ſine alteriꝰnature cōmixtione. luci a qua exiteſt coeuꝰ in duratiōe vt dic̄ augꝰQuācito eſt ignis tā cito eſt ſplēdor vn̄ ſi ignis eſſꝫ et̓nus ſplēdoreſſet eternꝰ Exit etiā ſplendor a luce ſine lucis diminutōne. ſine puritatis lucis cōtamine. ſine diſcontinuatiōe. cū ſui et alioꝝ manifeſtatione. cū ſui multiplicatōe vt dicitBaſilius.¶ Ca. xxxj. de LumineAmen differt a luce ſicutſpēs a genere. Om̄e eni lumen lux eſt ſꝫ nō ecōuerſoom̄is lux eſt lumē Nam lumen eſtdefluxus quidā a ſb̓a lucis in aereſiue in alio diaphano corꝑe receptus ⁊ vndiqꝫ circūfuſus Triplexat eſt lumē vt dic̄ auctor ꝑſpectiueſcꝫ reflexū. fractū et directū Reflexum ſicut a ſpeculo ⁊ alijs politiscorꝑibus q̄ reijciūt lumē a ſe receptum Aliud eſt lumē fractuꝫ. ſicutquādo lumen venit ad corpꝰ denſum aliqͣntulū quod non eſt oīnodenſum vel durū recipit lumen inſe ſed ꝓpter materiā non omninoobedientem. lumen illud nō tenetrectumᵈ inceſſum. ſꝫ diuertitur abinceſſu recto et vocatur fractio radij. Tertiū lumen eſt directum qd̓nō repellit̉ neqꝫ inuenit materiaꝫ