Down the long church, the stout monolithic piers make two virile lines. Only during a short period were such sturdy cylinders used, here and in Notre Dame at Paris are the chief examples, and both cathedrals were artistically right in preferring their uniform columns, even though both of them used the sexpartite vaulting that called for alternating ground supports. The coming cathedrals were to adopt once for all the barlong system of vaulting, where the concentration of loads fell equally on every bay, and to evolve a classic type of pier, consisting of a central cylinder flanked by four semi-attached columns. At Laon a few piers in the nave experimented with free-standing colonnettes, three of which were placed in front of the pillar to enlarge, there, the abacus of the capital on which stood the shafts that mounted to the vault-springing. The elliptical piers of Beauvais, longer from north to south, were to be the most perfect solution of the problem of ground supports.
There is no denying that Laon's interior is to-day too white, but we must remember that originally color was used on the stones, so that any effect of a hall would have been impossible in the olden times. Viollet-le-Duc called Laon the laic cathedral _par excellence_. He considered it a great civic hall wherein the populace "could unite and enjoy spectacles more or less profane." And even in the flat eastern wall he found something occultly heretical. The towers, he said, were more those of a château than a church. He shut his mind to the fact that Laon was erected largely by its bishops, that it was begun by the choir end, which is suitable only for divine service, and that if its seven towers had been crowned with the sky-pointing spires of the architect's plan, and if its sky-dreaming windows were still intact, there would be little of the aspect of a town hall about this stately church. Critics like Huysmans have exaggerated its present iciness: no one can pray in Laon, he exclaimed; its soul is fled forever. But what would be Chartres, his spot of election for prayer, were it unsoftened by its "storied windows richly dight"?
Only a slight amount of ancient glass has survived in Laon. The north rose of the transept shows pictures of the sciences. Beneath the rose window in the flat eastern wall are three handsome lancets made by the school of Chartres early in the XIII century. They show the passing away of the hieratic Byzantine gesture: in the Annunciation and Visitation medallions the robes float naturally; in the Nativity scene the natural gesture of a woman who tests the warmth of the water before bathing the Holy Child has been well rendered.