It was simple and withering.
Jean Valjean stepped up to the mirror. He read the four lines again, but he did not believe them. They produced on him the effect of appearing in a flash of lightning. It was a hallucination, it was impossible. It was not so.
Little by little, his perceptions became more precise; he looked at Cosette’s blotting-book, and the consciousness of the reality returned to him. He caught up the blotter and said: “It comes from there.” He feverishly examined the four lines imprinted on the blotter, the reversal of the letters converted into an odd scrawl, and he saw no sense in it. Then he said to himself: “But this signifies nothing; there is nothing written here.” And he drew a long breath with inexpressible relief. Who has not experienced those foolish joys in horrible instants? The soul does not surrender to despair until it has exhausted all illusions.
He held the blotter in his hand and contemplated it in stupid delight, almost ready to laugh at the hallucination of which he had been the dupe. All at once his eyes fell upon the mirror again, and again he beheld the vision. There were the four lines outlined with inexorable clearness. This time it was no mirage. The recurrence of a vision is a reality; it was palpable, it was the writing restored in the mirror. He understood.
Jean Valjean tottered, dropped the blotter, and fell into the old armchair beside the buffet, with drooping head, and glassy eyes, in utter bewilderment. He told himself that it was plain, that the light of the world had been eclipsed forever, and that Cosette had written that to someone. Then he heard his soul, which had become terrible once more, give vent to a dull roar in the gloom. Try then the effect of taking from the lion the dog which he has in his cage!