Rochefoucauld was soon to undergo a bitter disappointment. While occupied with party strife and faction in Paris, Madame de Chevreuse left him, and formed an alliance with the Duc de Nemours. Rochefoucauld still loved her. It was, probably, thinking of this that he afterwards wrote, "Jealousy is born with love, but does not die with it." He endeavoured to get Madame de Chatillon, the old mistress of the Duc de Nemours, reinstated in favour, but in this he did not succeed. The Duc de Nemours was soon after killed in a duel. The war went on, and after several indecisive skirmishes, the decisive battle was fought at Paris, in the Faubourg St. Antoine, where the Parisians first learnt the use or the abuse of their favourite defence, the barricade. In this battle, Rochefoucauld behaved with great bravery. He was wounded in the head, a wound which for a time deprived him of his sight. Before he recovered, the war was over, Louis XIV. had attained his majority, the gold of Mazarin, the arms of Turenne, had been successful, the French nobility were vanquished, the court supremacy established. This completed Rochefoucauld's active life. When he recovered his health, he devoted himself to society. Madame de Sable assumed a hold over him. He lived a quiet life, and occupied himself in composing an account of his early life, called his "Memoirs," and his immortal "Maxims." From the time he ceased to take part in public life, Rochefoucauld's real glory began. Having acted the various parts of soldier, politician, and lover with but small success, he now commenced the part of moralist, by which he is known to the world. Living in the most brilliant society that France possessed, famous from his writings, distinguished from the part he had taken in public affairs, he formed the centre of one of those remarkable French literary societies, a society which numbered among its members La Fontaine, Racine, Boileau. Among his most attached friends was Madame de La Fayette (the authoress of the "Princess of Cleeves"), and this friendship continued until his death. He was not, however, destined to pass away in that gay society without some troubles. At the passage of the Rhine in 1672 two of his sons were engaged; the one was killed, the other severely wounded. Rochefoucauld was much affected by this, but perhaps still more by the death of the young Duc de Longueville, who perished on the same occasion.