Claire pressed her hand to her heart to breathe more freely; she was suffocating. One thing was made clear to her mind which she had always suspected; namely, that Monsieur de La Rochefoucauld had for her been unfaithful to Madame de Longueville, in thought and in desire at least, and that it was a feeling of jealousy which led him to speak as he had been speaking. In fact, two years before, the Prince de Marsillac had paid court to her as assiduously as was consistent with his crafty nature, and his constant indecision and timidity, which made him the most vindictive of foes, when he was not the most grateful of friends. So it was that the viscountess preferred not to break a lance with the man who held public and private affairs in the hollow of his hand. "Do you know, Monsieur le Duc," said she, "that you are an invaluable man, especially under circumstances like the present; and that Monsieur de Mazarin, much as he prides himself upon his police, is no better served in that regard than yourself?" "If I knew nothing, madame," retorted Monsieur de la Rochefoucauld, "I should resemble that dear statesman too closely, and should have no reason for making war upon him. And so I try to keep myself posted on everything." "Even the secrets of your allies, if they have any?" "You used a word then which might be construed to your disadvantage, if it should be overheard,--'secrets.' So that journey and that meeting were secrets, were they?" "Let us understand each other, Monsieur le Duc, for you are no more than half right. The meeting was an accident. The journey was a secret, yes, and a woman's secret too, for it was known to none but Madame la Princesse and myself." The duke smiled. This sturdy defence made him sharpen up his own wits. "And to Lenet," he said, "and Richon, and Madame de Tourville, to say nothing of a certain Vicomte de Cambes, whose name I heard for the first time in connection with this matter. To be sure, as he is your brother, you might tell me that the secret was all in the family." Claire began to laugh, to avoid irritating the duke, whose smile was beginning to show signs of vanishing. "Do you know one thing, duke?" said she. "No, tell it me; and if it is a secret, madame, I promise to be as discreet as yourself, and tell it to no one but my staff." "Do as you please about that; I ask nothing better, although I thereby run the risk of making an enemy of a great princess, whose hatred would be no pleasant thing to incur." The duke blushed imperceptibly. "Well, what is this secret?" said he. "Do you know whom Madame la Princesse selected for my companion in the journey I was asked to undertake?" "No," "Yourself." "Indeed! I remember that Madame la Princesse asked me if I could act as escort to a person returning from Libourne to Paris." "And you refused?" "I was unavoidably detained in Poitou by important business." "Yes, you had to receive couriers from Madame de Longueville."