The Wealth of Nations by Part 4 Chapter 3 Page 51

If their trade should be of such a nature that one of them exported to the other nothing but native commodities, while the returns of that other consisted altogether in foreign goods; the balance, in this case, would still be supposed even, commodities being paid for with commodities. They would, in this case too, both gain, but they would not gain equally; and the inhabitants of the country which exported nothing but native commodities would derive the greatest revenue from the trade.

If England, for example, should import from France nothing but the native commodities of that country, and, not having such commodities of its own as were in demand there, should annually repay them by sending thither a large quantity of foreign goods, tobacco, we shall suppose, and East India goods; this trade, though it would give some