The Wealth of Nations by Part 4 Chapter 6 Page 35

Some of the foregoing reasonings and observations might perhaps have been more properly placed in those chapters of the first book which treat of the origin and use of money, and of the difference between the real and the nominal price of commodities. But as the law for the encouragement of coinage derives its origin from those vulgar prejudices which have been introduced by the mercantile system, I judged it more proper to reserve them for this chapter. Nothing could be more agreeable to the spirit of that system than a sort of bounty upon the production of money, the very thing which, it supposes, constitutes the wealth of every nation. It is one of its many admirable expedients for enriching the country.