I summon, therefore, every serious economist to tell me, otherwise than by transforming or repeating the question, for what reason value decreases in proportion as production augments, and reciprocally what causes this same value to increase in proportion as production diminishes. In technical terms, useful value and exchangeable value, necessary to each other, are inversely proportional to each other; I ask, then, why scarcity, instead of utility, is synonymous with dearness. For--mark it well--the price of merchandise is independent of the amount of labor expended in production; and its greater or less cost does not serve at all to explain the variations in its price. Value is capricious, like liberty: it considers neither utility nor labor; on the contrary, it seems that, in the ordinary course of affairs, and exceptional derangements aside, the most useful objects are those which are sold at the lowest price; in other words, that it is just that the men who perform the most attractive labor should be the best rewarded, while those whose tasks demand the most exertion are paid the least. So that, in following the principle to its ultimate consequences, we reach the most logical of conclusions: that things whose use is necessary and quantity infinite must be gratuitous, while those which are without utility and extremely scarce must bear an inestimable price. But, to complete the embarrassment, these extremes do not occur in practice: on the one hand, no human product can ever become infinite in quantity; on the other, the rarest things must be in some degree useful, else they would not be susceptible of value. Useful value and exchangeable value remain, then, in inevitable attachment, although it is their nature continually to tend towards mutual exclusion. I shall not fatigue the reader with a refutation of the logomachies which might be offered in explanation of this subject: of the contradiction inherent in the idea of value there is no assignable cause, no possible explanation. The fact of which I speak is one of those called primitive,--that is, one of those which may serve to explain others, but which in themselves, like the bodies called simple, are inexplicable. Such is the dualism of spirit and matter. Spirit and matter are two terms each of which, taken separately, indicates a special aspect of spirit, but corresponds to no reality. So, given man's needs of a great variety of products together with the obligation of procuring them by his labor, the opposition of useful value to exchangeable value necessarily results; and from this opposition a contradiction on the very threshold of political economy. No intelligence, no will, divine or human, can prevent it.