this a little more closely. Before the exchange we had £40 worth of wine in the hands of A, and £50 worth of corn in those of B, a total value of £90. After the exchange we have still the same total value of £90. The value in circulation has not increased by one iota, it is only distributed differently between A and B. What is a loss of value to B is surplus-value to A; what is "minus" to one is "plus" to the other. The same change would have taken place, if A, without the formality of an exchange, had directly stolen the £10 from B. The sum of the values in circulation can clearly not be augmented by any change in their distribution, any more than the quantity of the precious metals in a country by a Jew selling a Queen Anne's farthing for a guinea. The capitalist class, as a whole, in any country, cannot over-reach themselves.¹⁷

Turn and twist then as we may, the fact remains unaltered. If equivalents are exchanged, no surplus- value results, and if non-equivalents are exchanged, still no surplus-value.¹⁸Circulation, or the exchange of commodities, begets no value.¹⁹

The reason is now therefore plain why, in analysing the standard form of capital, the form under which it determines the economic organisation of modern society, we entirely left out of consideration its most popular, and, so to say, antediluvian forms, merchants' capital and money-lenders' capital.

The circuit M-C-M, buying in order to sell dearer, is seen most clearly in genuine merchants' capital. But the movement takes place entirely within the sphere of circulation. Since, however, it is impossible, by circulation alone, to account for the conversion of money into capital, for the formation of surplus-value, it would appear, that merchants' capital is an impossibility, so long as equivalents are exchanged;²⁰ that, therefore, it can only have its origin in the two-fold advantage gained, over both the selling and the buying producers, by the merchant who parasitically shoves himself in between them. It is in this sense that Franklin says, "war is robbery, commerce is generally cheating."²¹ If the transformation of merchants' money into capital is to be explained otherwise than by the producers being simply cheated, a long series of intermediate steps would be necessary, which, at present, when the simple circulation of commodities forms our only assumption, are entirely wanting.

What we have said with reference to merchants' capital, applies still more to money-lenders' capital. In merchants' capital, the two extremes, the money that is thrown upon the market, and the augmented money that is withdrawn from the market, are at least connected by a purchase and a sale, in other words by the movement of the circulation. In money-lenders' capital the form M-C-M is reduced to the two extremes without a mean, M-M , money exchanged for more money, a form that is incompatible with the nature of money, and therefore remains inexplicable from the standpoint of the circulation of commodities. Hence Aristotle: "since chrematistic is a double science, one part belonging to commerce, the other to economic, the latter being necessary and praiseworthy, the former based on circulation and with justice disapproved (for it is not based on Nature, but on mutual cheating), therefore the usurer is most rightly hated, because money itself is the source of his gain, and is not used for the purposes for which it was invented. For it originated for the exchange of commodities, but interest makes out of money, more money. Hence its name ([greek: tokos] interest and offspring). For the begotten are like those who beget them. But interest is money of money, so that of all modes of making a living, this is the most contrary to Nature."²²

In the course of our investigation, we shall find that both merchants' capital and interest-bearing capital are derivative forms, and at the same time it will become clear, why these two forms appear in the course of history before the modern standard form of capital.

We have shown that surplus-value cannot be created by circulation, and, therefore, that in its formation, something must take place in the background, which is not apparent in the circulation itself.²³ But can surplus-value possibly originate anywhere else than in circulation, which is the sum total of all the mutual relations of commodity-owners, as far as they are determined by their commodities? Apart from circulation, the commodity-owner is in relation only with his own commodity. So far as regards value, that relation is limited to this, that the commodity contains a quantity of his own labour, that quantity being measured by a definite social standard. This quantity is expressed by the value of the commodity, and since the value is reckoned in money of account, this quantity is also expressed by the price, which we will suppose