The chief care of the Midi architect was to avoid the flying buttress; he had inherited Rome's admiration for wide, unincumbered interiors, and its aversion to showing the structural skeleton. His warm sun precluded the use of wall inclosures that were composed entirely of stained glass, which fragile screens would have necessitated wide-spreading buttresses. He seemed to disdain sculpture. And yet, during the pre-Gothic day, Languedoc had excelled in that important branch of the builder's art, as Moissac's wealth of imagery and Elne's lovely cloister show. Various causes led to the nudity of sculpture in the later churches of the south. The Gothic cathedrals of the Midi were erected after two generations of the Albigensian strife had impoverished the race. The new mendicant Orders of Francis and Dominic advocated austerity; the best Gothic of Provence is the Dominican church of St. Maximin. The building material available in some of the central and southern provinces did not lend itself to ornamentation; the lava of Auvergne, the granite of Limousin, and the brick of the Toulouse region are unyielding to sculpture. The chief Gothic churches of the Midi were built in the second half of the XIII and the first part of the XIV centuries. First there rose in central France the sister cathedrals of Clermont and Limoges--northern Gothic infused with the regional spirit. Directly derived from them are the cathedrals of Toulouse and Narbonne. Albi Cathedral was not begun till 1282. The choir of Bordeaux, built by the first of the Avignon popes, is a classic of Rayonnant Gothic, and so is that jewel of Carcassonne Cité, the whilom cathedral of St. Nazaire. St. Sauveur, at Aix-en-Provence, the cathedral of Rodez, and Béziers' fortified church were the work of the successors of the apogee period of Gothic. At Montpellier, Mende, La Chaise Dieu, and Avignon, the XIV-century popes, all of whom were meridionals, built Gothic halls and chapels. Memorable and interesting as are the Gothic monuments of the Midi, the traveler carries away the impression that the inmost soul of these central and southern provinces lingers most happily in the venerated shrines of Our Lady and St. Michael at Le Puy, in such churches as Notre Dame-du-Port, St. Sernin, St. Trophime, in the sculptured portal of St. Gilles, and in Maguelonne's isolated cathedral of St. Peter. CLERMONT-FERRAND[206] Si c'est un aveuglement surnaturel de vivre sans chercher ce qu'on est, c'en est un terrible de vivre mal en croyant Dieu.... La conduite de Dieu, qui dispose toute choses avec douceur, est de mettre la religion dans l'esprit par les raisons, et dans le coeur par la grâce.--PASCAL (1623-62; born in Clermont).