Thus the conversation went on until evening; it was marked by obscenities that would have brought a blush--I will not say to a cuirassier, for cuirassiers are frequently chaste, but even to a Parisienne. Monsieur Sariette came to see his old pupil. When he entered the room the bust of Alexandre d'Esparvieu seemed to take shape behind the librarian's bald head. He drew near the bed. In the place of blue curtains, mirrored wardrobe, and chimney-piece, there straightway came into view the heavy-laden bookcases of the room of the globes and busts, and the air was heavy with piles of papers, records, and files. Monsieur Sariette could not be dissociated from his library; one could not conceive of him or even see him apart from it. He himself was paler, more vague, more shadowy, and more a creature of the fancy than the fancies he evoked. Maurice, who had grown very quiet, was sensible of this mark of friendship. "Sit down, Monsieur Sariette,--you know Madame des Aubels. May I introduce Arcade to you,--my guardian angel. It was he who, while yet invisible, pillaged your library for two years, made you lose all desire for food and drink, and drove you to the verge of madness. He it was who moved piles of books from the room of the busts to my summer-house one day; under your very nose, he took away I know not what precious volumes; and was the cause of your falling on the staircase; another day he took a volume of Salomon Reinach's, and, forced to go out with me (for he never left me, as I have learnt later), he let the volume drop in the gutter of the Rue Princesse. Forgive him, Monsieur Sariette,--he had no pockets. He was invisible. I bitterly regret, Monsieur Sariette, that all your old books were not devoured by fire or swallowed up by a flood. They made my angel lose his head. He became man, and now knows neither faith nor obedience to laws. It is I, now, who am his guardian angel. God knows how it will all end." While listening to this speech, Monsieur Sariette's face took on an expression of infinite, irreparable, eternal sadness; the sadness of a mummy. Rising to take his leave, the sorrowful librarian murmured in Arcade's ear: "The poor child is very ill. He is delirious." Maurice called the old man back. "Do stay, Monsieur Sariette. You shall have a game of bridge with us. Monsieur Sariette, listen to my advice. Do not do as I did--do not keep bad company. You will be lost. I shudder at the mere thought. Monsieur Sariette, do not go yet. I have something very important to ask you. When you come again, bring me a book on the truth of religion, so that I may study it. I must restore to my guardian-angel the faith which he has lost." CHAPTER XXXI WHEREIN WE ARE LED TO MARVEL AT THE READINESS WITH WHICH AN HONEST MAN OF TIMID AND GENTLE NATURE CAN COMMIT A HORRIBLE CRIME