A peasant who has harvested twenty sacks of wheat, which he with his family proposes to consume, deems himself twice as rich as if he had harvested only ten; likewise a housewife who has spun fifty yards of linen believes that she is twice as rich as if she had spun but twenty- five. Relatively to the household, both are right; looked at in their external relations, they may be utterly mistaken. If the crop of wheat is double throughout the whole country, twenty sacks will sell for less than ten would have sold for if it had been but half as great; so, under similar circumstances, fifty yards of linen will be worth less than twenty-five: so that value decreases as the production of utility increases, and a producer may arrive at poverty by continually enriching himself. And this seems unalterable, inasmuch as there is no way of escape except all the products of industry become infinite in quantity, like air and light, which is absurd. God of my reason! Jean Jacques would have said: it is not the economists who are irrational; it is political economy itself which is false to its definitions. Mentita est iniquitas sibi. In the preceding examples the useful value exceeds the exchangeable value: in other cases it is less. Then the same phenomenon is produced, but in the opposite direction: the balance is in favor of the producer, while the consumer suffers. This is notably the case in seasons of scarcity, when the high price of provisions is always more or less factitious. There are also professions whose whole art consists in giving to an article of minor usefulness, which could easily be dispensed with, an exaggerated value of opinion: such, in general, are the arts of luxury. Man, through his aesthetic passion, is eager for the trifles the possession of which would highly satisfy his vanity, his innate desire for luxury, and his more noble and more respectable love of the beautiful: upon this the dealers in this class of articles speculate. To tax fancy and elegance is no less odious or absurd than to tax circulation: but such a tax is collected by a few fashionable merchants, whom general infatuation protects, and whose whole merit generally consists in warping taste and generating fickleness. Hence no one complains; and all the maledictions of opinion are reserved for the monopolists who, through genius, succeed in raising by a few cents the price of linen and bread. It is little to have pointed out this astonishing contrast between useful value and exchangeable value, which the economists have been in the habit of regarding as very simple: it must be shown that this pretended simplicity conceals a profound mystery, which it is our duty to fathom.