Such mercantile states, however, are not only useful, but greatly useful, to the inhabitants of those other countries. They fill up, in some measure, a very important void; and supply the place of the merchants, artificers, and manufacturers, whom the inhabitants of those countries ought to find at home, but whom, from some defect in their policy, they do not find at home.
It can never be the interest of those landed nations, if I may call them so, to discourage or distress the industry of such mercantile states, by imposing high duties upon their trade, or upon the commodities which they furnish. Such duties, by rendering those commodities dearer, could serve only to sink the real value of the surplus produce of their own land, with which, or, what comes to the same thing, with the price of which those commodities are purchased. Such duties could only serve to discourage the increase of that surplus produce, and consequently the improvement and cultivation of their own land. The most effectual expedient, on the contrary, for raising the value of that surplus produce, for encouraging its increase, and consequently the improvement and cultivation of their own land, would be to allow the most perfect freedom to the trade of all such mercantile nations.