Abstract

The study presents the first critical edition of Grosseteste’s renewed treatise On light, where the English philosopher proposes an original cosmology based on the doctrine of light as first form of all bodies. The introduction to the edition provides a thorough account of the extant witnesses and establishes them in their stemmatic families. In so doing, it fills the lacunae of the edition published in 1912 by Ludwig Baur and addresses the central problem of the text, that is Grosseteste’s first meeting with Aristotle’s natural philosophy