The twelfth-century school of Chartres has long been famous for its rhetorical excellence and its Platonist philosophy. Only recently, however, have scholars become aware of the important role played by natural science in this centre of European thought. Questions about the corporeal world, or, as one Chartrain put it, ‘those things which are and which are seen, were asked there just as frequently and their answers sought just as eagerly as more intangible queries about incorporeal beings. Chartres produced long encyclopedic works of natural philosophy and applied a scientific outlook to its theological writings as well.