By degrees, we will admit, a certain horror seized upon him. The gloom which enveloped him penetrated his spirit. He walked in an enigma. This aqueduct of the sewer is formidable; it interlaces in a dizzy fashion. It is a melancholy thing to be caught in this Paris of shadows. Jean Valjean was obliged to find and even to invent his route without seeing it. In this unknown, every step that he risked might be his last. How was he to get out? should he find an issue? should he find it in time? would that colossal subterranean sponge with its stone cavities, allow itself to be penetrated and pierced? should he there encounter some unexpected knot in the darkness? should he arrive at the inextricable and the impassable? would Marius die there of hemorrhage and he of hunger? should they end by both getting lost, and by furnishing two skeletons in a nook of that night? He did not know. He put all these questions to himself without replying to them. The intestines of Paris form a precipice. Like the prophet, he was in the belly of the monster.