That night, Quasimodo did not sleep. He had just made his last round of the church. He had not noticed, that at the moment when he was closing the doors, the archdeacon had passed close to him and betrayed some displeasure on seeing him bolting and barring with care the enormous iron locks which gave to their large leaves the solidity of a wall. Dom Claude's air was even more preoccupied than usual. Moreover, since the nocturnal adventure in the cell, he had constantly abused Quasimodo, but in vain did he ill treat, and even beat him occasionally, nothing disturbed the submission, patience, the devoted resignation of the faithful bellringer. He endured everything on the part of the archdeacon, insults, threats, blows, without murmuring a complaint. At the most, he gazed uneasily after Dom Claude when the latter ascended the staircase of the tower; but the archdeacon had abstained from presenting himself again before the gypsy's eyes.
On that night, accordingly, Quasimodo, after having cast a glance at his poor bells which he so neglected now, Jacqueline, Marie, and Thibauld, mounted to the summit of the Northern tower, and there setting his dark lanturn, well closed, upon the leads, he began to gaze at Paris. The night, as we have already said, was very dark. Paris which, so to speak was not lighted at that epoch, presented to the eye a confused collection of black masses, cut here and there by the whitish curve of the Seine. Quasimodo no longer saw any light with the exception of one window in a distant edifice, whose vague and sombre profile was outlined well above the roofs, in the direction of the Porte Sainte-Antoine. There also, there was some one awake.
As the only eye of the bellringer peered into that horizon of mist and night, he felt within him an inexpressible uneasiness. For several days he had been upon his guard. He had perceived men of sinister mien, who never took their eyes from the young girl's asylum, prowling constantly about the church. He fancied that some plot might be in process of formation against the unhappy refugee. He imagined that there existed a popular hatred against her, as against himself, and that it was very possible that something might happen soon. Hence he remained upon his tower on the watch, "dreaming in his dream-place," as Rabelais says, with his eye directed alternately on the cell and on Paris, keeping faithful guard, like a good dog, with a thousand suspicions in his mind.
All at once, while he was scrutinizing the great city with that eye which nature, by a sort of compensation, had made so piercing that it could almost supply the other organs which Quasimodo lacked, it seemed to him that there was something singular about the Quay de la Vieille-Pelleterie, that there was a movement at that point, that the line of the parapet, standing out blackly against the whiteness of the water was not straight and tranquil, like that of the other quays, but that it undulated to the eye, like the waves of a river, or like the heads of a crowd in motion.