And just this breaking through by breaking away, its very apparent elusiveness and ambiguity of purpose, make for the attraction, the uniqueness of Chartres. It is a book which all the time pretends to be light while it is not, a piece of writing which gives itself informally as running chatter while it is firmly and formally constructed. Although there are fissures in the construction-after the tenth chapter and again after the thirteenth -the building remains standing. The visual arts, although done with after the tenth chapter, supply the socle for the remaining