_X_. The fact is, that his good sense interfered everywhere to temper the extravagant conclusions into which a severe logician could have driven him. [Footnote: The "Wealth of Nations" has never yet been ably reviewed, nor satisfactorily edited. The edition of Mr. Buchanan is unquestionably the best, and displays great knowledge of Political Economy as it stood before the revolution effected by Mr. Ricardo. But having the misfortune to appear immediately before that revolution, it is already to some degree an obsolete book. Even for its own date, however, it was not good as an edition of Adam Smith, its value lying chiefly in the body of original disquisitions which composed the fourth volume; for the notes not only failed to correct the worst errors of Adam Smith (which, indeed, in many cases is saying no more than that Mr. Buchanan did not forestall Mr. Ricardo), but were also deficient in the history of English finance, and generally in the knowledge of facts. How much reason there is to call for a new edition, with a commentary adapted to the existing state of the science, will appear on this consideration: the "Wealth of Nations" is the text-book resorted to by all students of Political Economy. One main problem of this science, if not the main problem (as Mr. Ricardo thinks), is to determine the laws which regulate Rents, Profits, and Wages; but everybody who is acquainted with the present state of the science must acknowledge that precisely on these three points it affords "very little satisfactory information." These last words are the gentle criticism of Mr. Ricardo: but the truth is, that not only does it afford very little information on the great heads of Rent, Profits, and Wages, but (which is much worse) it gives very false and misleading information.