D'Argenson and he had been at school together; but since they had parted in the Rue St. Jacques[242] their ways in life had lain far apart. Arouet had been absorbed by that brilliant coterie whose host was Vendôme and whose laureate was Chaulieu;[243] while d'Argenson pursued the path of the robe, which led far away from the dazzling dissoluteness of the Temple. Nor were they thrown together more closely in maturer life; for while d'Argenson, with some chosen spirits, was developing the purely French tradition of political thought, his friend, a guest at Twickenham and Battersea, was accustoming his eyes to that foreign light which he was afterwards to diffuse so fatefully around him. About the time at which d'Argenson joined the Entresol, Voltaire set out for England.[244] Separated as they were, they retained that easy good-feeling which only school companionship can inspire. Upon Voltaire's return they met more frequently, and in their letters their old discussions upon art and politics at the house of a popular society lady,[245] are often the theme of pleasant recollection. It was not, however, until the opening of the correspondence whose occasion and character we have now to record, that their casual acquaintance ripened into intimacy. Many of Voltaire's letters have never been recovered; and d'Argenson's, with scarcely an exception, have perished entirely. Still, there remain enough to form an intelligible series, and to throw a very attractive light upon the character of the men concerned. It was in the beginning of 1739 that Voltaire, incensed by a more than usually scurrilous libel, appealed to his friend for protection in an attempt to force the author[246] to a disavowal of his work. With the ready loyalty characteristic of him, d'Argenson accepted the trust;[247] and until the close of the quarrel he became the poet's "chargé d'affaires accredited to the literary police." Such of his letters as are preserved are truly charming, and they read strangely beside many a page of his Journal written at the same date. They are graced throughout by that open-hearted confidence which d'Argenson was always so ready to accord; and nothing can be sweeter than the self-congratulation with which he tells Voltaire of his success.[248] He was in constant communication with Madame du Châtelet; and d'Argenson joined Madame in a conspiracy of kindness to restrain the vivacities of their outraged friend.