The first thing to be inquired into, is the state of natural advantages. If any branch of natural produce, such as grain, cattle, wines, fruits, timber, or the like, are here found of so great importance to the rival nation, that they will purchase them with money, not with an exchange of their manufactures, such branches of trade may be kept open with them. If none such can be found, the first step is to cut off all communication of trade by exchange with such a people; and to apply closely to the supply of every want at home, without having recourse to foreigners. So soon as these wants begin to be supplied, and that a surplus is found, other nations must be fought for, who enjoy less advantages; and trade may be carried on with them in a subaltern way. People here must glean before they can expect to reap. But by gleaning every year they will add to their stock of wealth, and the more it is made subservient to public uses, the faster it will increase. The beginners will have certain advantages inseparable from their infant state; to wit, a series of augmentations of all kinds, of which we have so frequently made mention. If these can be preserved in an equable progression; if the balance of work and demand, and that of population and agriculture, can be kept in a gentle vibration, by alternate augmentations; and if a plan of oeconomy, equally good with that of the rivals, be set on foot and pursued; time will bring every natural advantage of climate, soil, situation, and extent, to work their full effects; and in the end they will decide the superiority. I shall now conclude my chapter, with some observations on the difference between theory and practice, so far as regards the present subject. In theory, we have considered every one of the causes which produce high prices, and prevent exportation, as simple and uncompounded: in practice they are seldom ever so. This circumstance makes the remedies difficult, and sometimes dangerous. Difficult, from the complication of the disease; dangerous, because the remedy against consolidated profits will do infinite harm, if applied to remove that which proceeds from dear subsistence, as has been said.