… is from page 116 of Ludwig von Mises’s Introduction to the 1953 Henry Regnery Co. edition of Adam Smith’s An Inquiry Into the Nature and Causes of the Wealth of Nations, as Mises’s Introduction is reprinted as chapter 24 of the original 1990 edition of Mises, Economic Freedom and Interventionism, Bettina Bien Greaves, ed.:
The British historian Henry Thomas Buckle (1821-1862), declared [about Adam Smith and The Wealth of Nations] “that this solitary Scotchman has, by the publication of one single work, contributed more toward the happiness of man than has been effected by the united abilities of all the statesmen and legislators of whom history has presented an authentic record.” The English economist Walter Bagehot (1826-1877) said about the Wealth of Nations: “The life of almost everyone in England – perhaps of everyone – is different and better in consequence of it.”