A few words will suffice to explain the grounds of the doctrine of Smith. The power by which a nation creates its wealth is its labour; and the quantity of wealth created will increase in direct proportion as the power increases. But the increase of this last may take place in two ways--in energy, and in extent. Labour increases in energy, when the same quantity of labour furnishes a more abundant product; and the two great means of effecting the increase, or of perfecting the productive powers of labour, are the division of labour, and the invention of such machines as shorten and facilitate the manual operations of industry. Labour increases in extent, when the number of those engaged in it augments in proportion to the increasing number of the consumers, which can take place only in consequence of an increase of capitals, and of those branches of business in which they are employed. Now, to accomplish the increase of labour in both these ways, and to conduct it gradually to the utmost pitch of energy and extent to which it can reach in any nation, considering the situation, the nature, and the peculiarities of its territories, what are the exertions to be made by its government? The subdivision of labour, and the invention and perfecting of machines. These two great means of augmenting the energy of labour, advance in proportion to the extent of the market, or, in other words, in proportion to the number of exchanges which can be made, and to the ease and readiness with which these can take place. Let the government, then, direct all its attention to the enlargement of the market, by forming safe and convenient roads, by the circulation of sterling coin, and by securing the faithful fulfilment of contracts; all of which are indispensible measures, at the same time that, when put in practice, they will never fail to attain the desired end. And the nearer a government approaches to perfection in each of these three points, the more certainly will it produce every possible increase of the national market. The first of the three means is, without doubt, the most essential, as no other expedient whatever can possibly supply its place. The gradual accumulation of capitals is a necessary consequence of the increased productive powers of labour, and it becomes also a cause of still farther increase in these powers; but, in proportion as this accumulation becomes greater and greater, it serves to increase the extent of labour, inasmuch as it multiplies the number of labourers, or the sum of national industry. This increase, however, of the number of hands in the nation employed, will always be regulated by the nature of the business to which the capitals are dedicated.