This absence of the personal element is nowhere better illustrated than in Cathedral building. Of all the really great men who planned the Cathedrals of France, almost nothing is known; and by searching, little can be found out. Who can give a dead date, much less a living fact, concerning the life of that Gervais who conceived the great Gothic height of Narbonne? Who can tell even the name of him who planned the sombre, battlemented walls of Agde, or of that great man who first saw in poetic vision the delicate choir of Saint-Nazaire in Carcassonne? Artists have a well-preserved personality,--cathedral-builders, none. Robert of Luzarches who conceived the "Parthenon of all Gothic architecture," and the man who planned stately Sens and the richness of Canterbury, are as unknown to us as the quarries from which the stones of their Cathedrals were cut. It is not the Cathedral built by Robert of Luzarches belonging to Amiens, as it is the Assumption by Rubens belonging to Antwerp. It is scarcely the Cathedral of its patron, Saint Firmin. It is the Cathedral of Amiens. [Illustration: "THE DELICATE CHOIR OF SAINT-NAZAIRE."--CARCASSONNE.] We hear many learned disquisitions on the decay of the art of church building. Lack of time in our rushing age, lack of patience, decline of religious zeal, or change in belief, these are some of the popular reasons for this architectural degeneracy. Strange as it may seem none of these have had so powerful an influence as the invention of printing. The first printing-press was made in the middle of the XV century,--after the conception of the great Cathedrals. In an earlier age, when the greatest could neither read nor write and manuscripts even in monasteries were rare, sculpture and carving were the layman's books, and Cathedrals were not only places of worship, they were the people's religious libraries where literature was cut in stone.