HKB
express it relatively in terms of another commodity, which has the same amount of labor time incorporated in it. The clock is worth as much as the piece of cloth.
But while the production of commodities and the exchange of commodities compel the society resting upon them to take this roundabout course, they are impelled to a shortening of the process. They separate from the mass of commodities one sovereign commodity, in which the value of all other commodities can be universally expressed, a commodity which is the complete incarnation of social labor, and, against which, all other commodities may be set in direct comparison--gold. Gold already germinates in the idea of value, it is only developed value. But since the commodity value exists in gold also, itself being a commodity, a new factor arises in the society which produces and exchanges commodities, a factor with new social functions and operations. We can now examine this a little more closely.
The economy of the production of commodities is by no means the only science which has to reckon with relatively known factors. Even in physics, we do not know how many single gas molecules there are in a given volume of gas, pressure and temperature being given. But we know, as far as Boyle's law is correct, that a given volume of that gas has as many molecules as a similar volume of another selected gas at the same pressure and the same temperature. We can therefore compare the different volumes of different gases with respect to their molecular content, and, if we take one litre of gas at 0 deg. Fahrenheit as the unit we can refer the molecular content of each to this standard. In chemistry the absolute atomic weights of separate elements is unknown to us. But we know them relatively when we know their mutual conditions. And just as the production of commodities and their economy has a relative expression for the unknown quantities of labor existing in commodities, since it compares these commodities according to the relative amounts of labor which they contain, so chemistry makes a relative expression for the amounts of atomic weights unknown to it, since it compares the separate elements according to their atomic weights and expresses the weight of the one as multiples or factors of the other. And just as the production of commodities elevates gold to the position of an absolute commodity, to the universal equivalent for other commodities, the measure of values, so chemistry elevates hydrogen to the position of a chemical gold-commodity, since it fixes the atomic weight of hydrogen at 1 and reduces the atomic weights of all the other elements in terms of hydrogen and expresses them as multiples of its atomic weight.
The production of commodities is by no means the exclusive form of social production. In the ancient Indian communities and the family communities of the Southern Slavs products were not transformed into commodities. The members of the community were directly engaged in social production, the work was distributed as custom and circumstances required as were the products as they came into the realm of consumption. Direct social production and direct social consumption exclude all exchange of commodities and hence the transformation of products into commodities (at least within the confines of the society) and therewith their transformation into value.