The Wealth of Nations by Part 4 Chapter 3 Page 57

It would, indeed, be more advantageous for England that it could purchase the wines of France with its own hardware and broadcloth than with either the tobacco of Virginia or the gold and silver of Brazil and Peru. A direct foreign trade of consumption is always more advantageous than a roundabout one. But a round-about foreign trade of consumption, which is carried on with gold and silver, does not seem to be less advantageous than any other equally round-about one. Neither is a country which has no mines more likely to be exhausted of gold and silver by this annual exportation of those metals than one which does not grow tobacco by the like annual exportation of that plant. As a country which has wherewithal to buy tobacco will never be long in want of it, so neither will one be long in want of gold and silver which has wherewithal to purchase those metals.