increased quantity of its commodities, notwithstanding its augmented riches, and its augmented means of enjoyment, have a less amount of value. By constantly increasing the facility of production, we constantly diminish the value of some of the commodities before produced, though by the same means we not only add to the national riches, but also to the power of future production. Many of the errors in political economy have arisen from errors on this subject, from considering an increase of riches, and an increase of value, as meaning the same thing, and from unfounded notions as to what constituted a standard measure of value. One man considers money as a standard of value, and a nation grows richer or poorer, according to him, in proportion as its commodities of all kinds can exchange for more or less money. Others represent money as a very convenient medium for the purpose of barter, but not as a proper measure by which to estimate the value of other things: the real measure of value according to them is corn,[27] and a country is rich or poor, according as its commodities will exchange for more or less corn. There are others again, who consider a country rich or poor, according to the quantity of labour that it can purchase.[28] But why should gold, or corn, or labour, be the standard measure of value, more than coals or iron?--more than cloth, soap, candles, and the other necessaries of the labourer?--why, in short, should any commodity, or all commodities together, be the standard, when such a standard is itself subject to fluctuations in value? Corn, as well as gold, may from difficulty or facility of production, vary 10, 20, or 30 per cent., relatively to other things; why should we always say, that it is those other things which have varied, and not the corn? That commodity is alone invariable, which at all times requires the same sacrifice of toil and labour to produce it. Of such a commodity we have no knowledge, but we may hypothetically argue and speak about it, as if we had; and may improve our knowledge of the science, by shewing distinctly the absolute inapplicability of all the standards which have been hitherto adopted. But supposing either of these to be a correct standard of value, still it would not be a standard of riches, for riches do not depend on value. A man is rich or poor, according to the abundance of necessaries and luxuries, which he can command; and whether the exchangeable value of these for money, for corn, or for labour, be high or low, they will equally contribute to the enjoyment of their possessor. It is through confounding the ideas of value and wealth, or riches, that it has been asserted, that by diminishing the quantity of commodities, that is to say, of the necessaries, conveniences, and enjoyments of human life, riches may be increased. If value were the measure of riches this could not be denied, because by scarcity the value of commodities is raised; but if Adam