Secondly, that those who know mankind in theory, seldom know it in practice; the very wisdom that conceives a rule, is accompanied with the abstraction, or the vanity, which destroys it. I mean that the philosopher of the cabinet is often too diffident to put into action his observations, or too eager for display to conceal their design. Lord Vincent values himself upon his science du monde. He has read much upon men, he has reflected more; he lays down aphorisms to govern or to please them. He goes into society; he is cheated by the one half, and the other half he offends. The sage in the cabinet is but a fool in the salon; and the most consummate men of the world are those who have considered the least on it. CHAPTER XXV. Falstaff. What money is in my purse? Page. Seven groats and two-pence. --Second Part of Henry IV. En iterum Crispinus. The next day a note was brought me, which had been sent to my former lodgings in the Hotel de Paris: it was from Thornton. "My dear Sir," (it began) "I am very sorry that particular business will prevent me the pleasure of seeing you at my rooms on Sunday. I hope to be more fortunate some other day. I should like much to introduce you, the first opportunity, to my friends in the Rue Gretry, for I like obliging my countrymen. I am sure, if you were to go there, you would cut and come again--one shoulder of mutton drives down another. "I beg you to accept my repeated excuses, and remain, "Dear Sir, "Your very obedient servant, "Thomas Thornton. "Rue St. Dominique, "Friday Morning." This letter produced in me many and manifold cogitations. What could possibly have induced Mr. Tom Thornton, rogue as he was, to postpone thus of his own accord, the plucking of a pigeon, which he had such good reason to believe he had entrapped? There was evidently no longer the same avidity to cultivate my acquaintance as before; in putting off our appointment with so little ceremony, he did not even fix a day for another. What had altered his original designs towards me? for if Vincent's account was true, it was natural to suppose that he wished to profit by any acquaintance he might form with me, and therefore such an acquaintance his own interests would induce him to continue and confirm.