Before proceeding to consider that question, a word remains to be said about a few of the men with whom d'Argenson was soon to be engaged. He was already well known in the diplomatic circle at Paris, and with two, at least, of its leading members he was upon intimate terms. One of them was the Marquis de Valori, the French envoy at Berlin, whom d'Argenson had introduced to Voltaire as early as 1739;[268] the other was the ambassador of Holland, M. van Hoey. Van Hoey was a man after d'Argenson's own heart. He sought, in sympathy with his friend, to raise the tone of politics, its huckstering pettiness of means and motives, by a certain philosophy of his own, a philosophy which is not more visionary than most things good, nor more ridiculous than most things noble, but with which the man of the world will refuse to meddle, and at which "le peuple petit-maître," in d'Argenson's words,[269] will go on laughing to the end of time. Before the minister had attained his present position, Van Hoey had esteemed his person and valued his advice; and in the previous year (1743) he had even transmitted to the Hague a long account of a conversation with "un seigneur," whom no one who has read a hundred pages of d'Argenson's writing will have any difficulty in identifying.[270] There was another personage in the forefront of politics, whose career d'Argenson had not watched in vain. The Prince Royal of Prussia had gone far since the spring of 1739, when the friend of Voltaire was privileged to receive his letters. Time had made little impression upon d'Argenson's first estimate of him. He admired his devotion and his strength of character; and he had even some kindness for that 'splendid mendacity' to which Anti-Machiavel had been converted by events. It was to no childish sentiment of hero-worship that his regard was due; but to a firm and surely reasonable conviction that Frederick was strong enough to afford to be honest, that such a man did not make engagements which he would be glad to repudiate, or break his word when he could possibly help it. He felt that now, as at Frederick's accession,[271] his interests were coincident with those of France; and that the King of Prussia had only to be treated with honesty and supported well, to prove the soundest ally in Europe. On the 15th of November, 1744, a proclamation was issued[272] directing a general thanksgiving for the capture of Fribourg, the recovery of the King, and the successes of the late campaign. Three days afterwards d'Argenson became Minister of Foreign Affairs.