The wall walling Paris makes Paris murmur.
In the fifteenth century, Paris was still divided into three wholly distinct and separate towns, each having its own physiognomy, its own specialty, its manners, customs, privileges, and history: the City, the University, the Town. The City, which occupied the island, was the most ancient, the smallest, and the mother of the other two, crowded in between them like (may we be pardoned the comparison) a little old woman between two large and handsome maidens. The University covered the left bank of the Seine, from the Tournelle to the Tour de Nesle, points which correspond in the Paris of to-day, the one to the wine market, the other to the mint. Its wall included a large part of that plain where Julian had built his hot baths. The hill of Sainte-Geneviève was enclosed in it. The culminating point of this sweep of walls was the Papal gate, that is to say, near the present site of the Pantheon. The Town, which was the largest of the three fragments of Paris, held the right bank. Its quay, broken or interrupted in many places, ran along the Seine, from the Tour de Billy to the Tour du Bois; that is to say, from the place where the granary stands today, to the present site of the Tuileries. These four points, where the Seine intersected the wall of the capital, the Tournelle and the Tour de Nesle on the right, the Tour de Billy and the Tour du Bois on the left, were called pre-eminently, "the four towers of Paris." The Town encroached still more extensively upon the fields than the University. The culminating point of the Town wall (that of Charles V.) was at the gates of Saint-Denis and Saint-Martin, whose situation has not been changed.