Say, in speaking of what is improperly called the balance of trade, that if it suits a merchant better to export the precious metals to a foreign country than any other goods, it is also the interest of the state that he should export them, because the state only gains or loses through the channel of its citizens; and in what concerns foreign trade, that which best suits the individual, best suits also the state; therefore, by opposing obstacles to the exportation which individuals would be inclined to make of the precious metals, nothing more is done, than to force them to substitute some other commodity less profitable to themselves, and to the state.