In order to live as a proprietor, or to consume without producing, it is necessary, then, to live upon the labor of another; in other words, it is necessary to kill the laborer. It is upon this principle that proprietors of those varieties of capital which are of primary necessity increase their farm-rents as fast as industry develops, much more careful of their privileges in that respect, than those economists who, in order to strengthen property, advocate a reduction of interest. But the crime is unavailing: labor and production increase; soon the proprietor will be forced to labor, and then property is lost. The proprietor is a man who, having absolute control of an instrument of production, claims the right to enjoy the product of the instrument without using it himself. To this end he lends it; and we have just seen that from this loan the laborer derives a power of exchange, which sooner or later will destroy the right of increase. In the first place, the proprietor is obliged to allow the laborer a portion of the product, for without it the laborer could not live. Soon the latter, through the development of his industry, finds a means of regaining the greater portion of that which he gives to the proprietor; so that at last, the objects of enjoyment increasing continually, while the income of the idler remains the same, the proprietor, having exhausted his resources, begins to think of going to work himself. Then the victory of the producer is certain. Labor commences to tip the balance towards its own side, and commerce leads to equilibrium. Man's instinct cannot err; as, in liberty, exchange of functions leads inevitably to equality among men, so commerce--or exchange of products, which is identical with exchange of functions--is a new cause of equality. As long as the proprietor does not labor, however small his income, he enjoys a privilege; the laborer's welfare may be equal to his, but equality of conditions does not exist. But as soon as the proprietor becomes a producer,--since he can exchange his special product only with his tenant or his _commandite_,--sooner or later this tenant, this _exploited_ man, if violence is not done him, will make a profit out of the proprietor, and will oblige him to restore--in the exchange of their respective products--the interest on his capital. So that, balancing one injustice by another, the contracting parties will be equal. Labor and exchange, when liberty prevails, lead, then, to equality of fortunes; mutuality of services neutralizes privilege. That is why despots in all ages and countries have assumed control of commerce; they wished to prevent the labor of their subjects from becoming an obstacle to the rapacity of tyrants.