‘Apart from this class (the capitalists), there is, according to our assumption—the general and exclusive domination of capitalist production—no other class but the working class. All that the working class buys is equal to the sum total of its wages, equal to the sum total of the variable capital advanced by the entire capitalist class.’[144]

The workers, then, are even less able than the capitalist class to realise the capitalised surplus value. Somebody must buy it, if the capitalists are still to be able to recover the capital they have accumulated and advanced; and yet—we cannot think of any buyers other than capitalists and workers. ‘How can the entire capitalist class accumulate money under such circumstances?’[144]

Realisation of the surplus value outside the only two existing classes of society appears as indispensable as it looks impossible. The accumulation of capital has been caught in a vicious circle. At any rate, the second volume of Capital offers no way out.

If we should now ask why Marx’s Capital affords no solution to this important problem of the accumulation of capital, we must bear in mind above all that this second volume is not a finished whole but a manuscript that stops short half way through.

The external form of its last chapters in particular proves them to be in the nature of notes, intended to clear the author’s own mind, rather than final conclusions ready for the reader’s enlightenment. This fact is amply authenticated by the man best in the position to know: Friedrich Engels, who edited the second volume. In his introduction to the second volume he reports in detail on the conditions of the preliminary studies and the manuscripts Marx had left, which were to form the basis of this volume:

‘The mere enumeration of the manuscripts left by Marx as a basis for Volume II proves the unparalleled conscientiousness and strict self-criticism which he practised in his endeavour to fully elaborate his great economic discoveries before he published them. This self-criticism rarely permitted him to adapt his presentation of the subject, in content as well as in form, to his ever widening horizon, which he enlarged by incessant study.

‘The material ... consists of the following parts: First, a manuscript entitled “A contribution to the Critique of Political Economy”, containing 1,472 quarto pages in 23 divisions, written in the time from August, 1861, to June, 1863. It is a continuation of the work of the same title, the first volume of which appeared in Berlin, in 1859.... This manuscript, valuable though it is, could not be used in the present edition of Volume II.

‘The manuscript next following in the order of time is that of Volume III....

‘The period after the publication of Volume I, which is next in order, is represented by a collection of four manuscripts for Volume II, marked I-IV by Marx himself. Manuscript I (150 pages) presumably written in 1865 or 1867, is the first independent, but more or less fragmentary, elaboration of the questions now contained in Volume II. This manuscript is likewise unsuited for this edition. Manuscript III is partly a compilation of quotations and references to the manuscripts containing Marx’s extracts and comments, most of them relating to the first section of Volume II, partly an elaboration of special points, particularly a critique of Adam Smith’s statements as to fixed and circulating capital and the source of profits; furthermore, a discussion of the relations of the rate of surplus-value to the rate of profit, which belongs in Volume III. The references furnished little that was new, while the elaborations for Volumes II and III were rendered valueless through subsequent revisions and had to be ruled out for the greater part. Manuscript IV is an elaboration, ready for printing, of the first section and the first chapters of the second section of Volume II, and has been used in its proper place. Although it was found that this manuscript had been written earlier than Manuscript II, yet it was far more finished in form and could be used with advantage for the corresponding part of this volume. I had to add only a few supplementary parts of Manuscript II. This last manuscript is the only fairly completed elaboration of Volume II and dates from the year 1870. The notes for the final revision, which I shall mention immediately, say explicitly: “The second elaboration must be used as a basis.”

‘There is another interruption after 1870, due mainly to ill health. Marx employed this time in his customary way, that is to say he studied agronomics, agricultural conditions in America and especially Russia, the money market and banking institutions, and finally natural sciences, such as geology and physiology. Independent mathematical studies also form a large part of the numerous manuscripts of this period. In the beginning of 1877, Marx had recovered sufficiently to resume once more his chosen life’s work. The beginning of 1877 is marked by references and notes from the above named four manuscripts intended for a new elaboration of Volume II, the beginning of which is represented by Manuscript V (56 pages in folio). It comprises the first four chapters and is not very fully worked out. Essential points are treated in footnotes. The material is rather collected than sifted, but it is the last complete presentation of this most important first section. A preliminary attempt to prepare this part for the printer was made in Manuscript VI (after October, 1877, and before July, 1878), embracing 17 quarto pages, the greater part of the first chapter. A second and last attempt was made in Manuscript VII, dated July 2, 1878, and consisting of 7 pages in folio.