At the opera ball Rastignac had recognized the man he had known as Vautrin at Madame Vauquer’s; but he knew that if he did not hold his tongue, he was a dead man. So Madame de Nucingen’s lover and Lucien had exchanged glances in which fear lurked, on both sides, under an expression of amity. In the moment of danger, Rastignac, it is clear, would have been delighted to provide the vehicle that should convey Jacques Collin to the scaffold. From all this it may be understood that Carlos heard of the Baron’s passion with a glow of sombre satisfaction, while he perceived in a single flash all the advantage a man of his temper might derive by means of a hapless Esther. “Go on,” said he to Lucien. “The Devil is mindful of his chaplain.” “You are smoking on a powder barrel.” “Incedo per ignes,” replied Carlos with a smile. “That is my trade.” The House of Grandlieu divided into two branches about the middle of the last century: first, the ducal line destined to lapse, since the present duke has only daughters; and then the Vicomtes de Grandlieu, who will now inherit the title and armorial bearings of the elder branch. The ducal house bears gules, three broad axes or in fess, with the famous motto: Caveo non timeo, which epitomizes the history of the family. The coat of the Vicomtes de Grandlieu is the same quartered with that of Navarreins: gules, a fess crenelated or, surmounted by a knight’s helmet, with the motto: Grands faits, grand lieu. The present Viscountess, widowed in 1813, has a son and a daughter. Though she returned from the Emigration almost ruined, she recovered a considerable fortune by the zealous aid of Derville the lawyer. The Duc and Duchesse de Grandlieu, on coming home in 1804, were the object of the Emperor’s advances; indeed, Napoleon, seeing them come to his court, restored to them all of the Grandlieu estates that had been confiscated to the nation, to the amount of about forty thousand francs a year. Of all the great nobles of the Faubourg Saint-Germain who allowed themselves to be won over by Napoleon, this Duke and Duchess--she was an Ajuda of the senior branch, and connected with the Braganzas--were the only family who afterwards never disowned him and his liberality. When the Faubourg Saint-Germain remembered this as a crime against the Grandlieus, Louis XVIII. respected them for it; but perhaps his only object was to annoy _Monsieur_.