Since the series of phases is opened by M-C, the second link of the circulation is C'-M.' In other words, the starting point is M, or the money-capital to be utilized, the terminal point M', or the utilized money-capital M plus m, in which M figures together with its offspring m. This distinguishes the circulation of M from that of the two other cycles P and C', in two ways. On one side, its two extremes are represented by the money-form. And money is the tangible form of value, the value of the product in its independent form, in which every trace of the use-value of the commodities has been extinguished. On the other side, the formula P...P is not necessarily transformed into P...P' (P plus p,) and in the form C-C', no difference in value is visible between the two extremes. It is, therefore, characteristic for the formula M-M' that capital value is its starting point, and utilized capital value its terminal point, so that advanced capital value appears as the means, and utilized capital value as the end of the entire operation. And furthermore, this relation is expressed in the form of money, in the form of independent value, so that money-capital is money generating more money. The generation of surplus-value by value is not only expressed as the Alpha and Omega of the process, but more explicitly in the form of glittering money.
4. Since M', the money-capital realized as a result of C'-M', the supplementary and concluding form of M-C, has absolutely the same form in which it began its first circulation, it can immediately begin the same circulation over again as an increased (accumulated) money-capital, or as M' equal to M plus m. And it is not expressed in the formula M-M' that, in the repetition of the cycle, the circulation of m separates from that of M. Considered in its complete form, the circulation of money capital expresses simply the process of utilization and accumulation. The consumption in it is productive consumption, as shown by the formula M-C{LPm and it is only this which is included in this circulation of individual capital. M-L means L-M, or C-M, on the part of the laborer. It is therefore the first phase of circulation which promotes his individual consumption, thus: L-M-C (means of subsistence). The second phase, M-C, no longer falls within the circulation of individual capital, but it is initiated by individual capital and an indispensable premise for it, since the laborer must above all live and maintain himself by individual consumption, in order to be always on the market for exploitation by the capitalist. But this consumption is here only assumed as the indispensable condition for the productive consumption of labor power by capital, and it is, therefore, considered only in so far as it preserves and reproduces his labor power by means of his individual consumption. But the means of production Pm, the commodities proper which enter into the circulation of capital, are only material feeding the productive consumption. The act L-M promotes the individual consumption of the laborer, the transformation of means of subsistence into flesh and blood. It is true, that the capitalist must also be present, must also live and consume in order to perform the function of a capitalist. To this end, he has, indeed, but to consume in the same way as the laborer, and this is all that is assumed in this form of the circulation process. But it is not formally expressed, since the term M' concludes the formula and indicates that it may at once re-enter on its function of increased money-capital.
In the formula C'-M', the sale of C' is directly indicated; but this sale C'-M' on the part of one is M-C, or the purchase of commodities, on the part of another, and in the last analysis a commodity is bought only for its use-value, in order to enter (leaving intermediate sales out of consideration) into the process of consumption, and this may be either productive or individual consumption, according to the nature of the commodity. But this consumption does not enter into the circulation of individual capital, the product of which is C'. This product is eliminated from this circulation from the moment that it is sold. C' is explicitly produced for consumption by others. For this reason we note that certain spokesmen of the mercantile system (which is based on the formula M-C...P...C'-M') deliver lengthy sermons to the effect that the individual capitalist should consume only in his capacity as a worker, that capitalist nations should let other and less intelligent nations consume their own and other commodities, and that a capitalist nation should devote itself for life to the productive consumption of commodities. These sermons frequently remind us in form and content of analogous ascetic exhortations of the fathers of the church.
The rotation process of capital is therefore a combination of circulation and production, it includes both. In so far as the two phases M-C and C'-M' are processes of circulation, the rotation of capital is a part of the general circulation of commodities. But in so far as they are definite sections performing a peculiar function in the rotation of capital, which combines the spheres of circulation and production, capital goes through its own circulation in the general circulation of commodities. The general circulation of commodities serves capital in its first stage as a means of assuming that form in which it can perform the function of productive capital; in its second stage, it serves to eliminate the commodity function in which capital cannot renew its circulation; at the same time it enables capital to separate its own circulation from that of the surplus-value created by it.
The circulation of money-capital is therefore the most one-sided, and thus the most convincing and typical form of the circulation of industrial capital. Its aim and compelling motive, the utilization of value, the making and accumulation of money, is thus most clearly revealed. Buying in order to sell dearer is its slogan. The first phase M-C also indicates the origin of the elements of productive capital in the commodity market, or more generally, the dependence of the capitalist mode of production on circulation, on commerce. The circulation of money-capital is not merely the production of commodities; it is itself possible only through circulation of commodities and based on it. This is plain from the fact that the term M belongs to circulation and represents the first and most typical form of advanced capital-value. This is not the case in the other two forms of circulation.
The circulation of money-capital always remains the general expression of industrial capital, because it always implies the utilization of the advanced value. In P...P, the money-character of capital is shown only in the price of the elements of production as a value expressed in money-terms for the purpose of calculation and book-keeping.
M...M' becomes a special form of the circulation of industrial capital when new capital is first advanced in the form of money and then returned in the same form, either in passing from one branch of industry to another, or in the case that industrial capital retires from business. This includes the capital function of the surplus-value first advanced in the form of money, and becomes most evident when surplus-value performs a function in some other business than the one in which it originated. M...M' may be the first circulation of a certain capital; it may be the last; it may be regarded as the form of the total social capital; it is that form of capital which is newly invested, either as a recently accumulated capital in the form of money, or as some old capital which is entirely transformed into money for the purpose of transfer from one branch of industry to another.
Being a form always contained in all circulations, money-capital performs this circulation precisely for that part of capital which produces surplus-value, viz., variable capital. The normal form of an advance in wages is payment in money; this process must be renewed in short intervals, because the laborer lives from hand to mouth. In his relation to the laborer, the capitalist must therefore always be a money-capitalist, and his capital must be money-capital. There can be no direct or indirect balancing of accounts in this case, such as we find in the purchase of means of production or in the sale of productive commodities, where the greater part of the money capital really exists in the form of commodities, while the money is mainly used for purposes of calculation and figures in cash only in the balancing of accounts. On the other hand, a part of the surplus-value arising out of variable capital is spent by the capitalist for his individual consumption, which is a part of the retail trade, and this surplus-value is in the last analysis always expended in the form of money. It does not matter how large or small may be this part of surplus-value. Variable capital always appears anew as money-capital invested in wages (M-L) and m as surplus-value which may be expended for the individual consumption of the capitalist. So that M, capital advanced for wages, and m, its increment, are necessarily held and spent in the form of money.
The formula M-C...P...C'-M', with its result M' equal to M plus m, is, in a certain sense, deceptive,
