The authors such as Sismondi, Malthus and Vorontsov, who are groping after the problem of equilibrium between saving and investment, are treated with even less sympathy (though she has a kindly feeling for Sismondi, to whom she considers that Marx gave too little recognition[41] ) for she is either oblivious that there is such a problem, or regards it as trivial.[42] We leave the discussion, at the end of Section II, at the same point where we entered it, with the clue to the inducement to invest still to find.
Section III is broader, more vigorous and in general more rewarding than the two preceding parts. It opens with a return to Marx’s model for a capitalist system with accumulation going on. Our author then sets out a fresh model allowing for technical progress. The rate of exploitation (the ratio of surplus to wages) is rising, for real wages remain constant while output per man increases. In the model the proportion of surplus saved is assumed constant for simplicity, though in reality, she holds, it would tend to rise with the real income of the capitalists.[43] The ratio of constant to variable capital is rising for technical reasons. (The convention by which the annual wear and tear of capital is identified with the stock of capital now becomes a great impediment to clear thinking.) The arithmetical model shows the system running into an impasse because the output of Department I falls short of the requirements of constant capital in the two departments taken together, while the output of Department II exceeds consumption.[44] The method of argument is by no means rigorous. Nothing follows from the fact that one particular numerical example fails to give a solution, and the example is troublesome to interpret as it is necessary to distinguish between discrepancies due to rounding off the figures from those which are intended to illustrate a point of principle.[45] But there is no need to paddle in the arithmetic to find where the difficulty lies. The model is over-determined because of the rule that the increment of capital within each department at the end of a year must equal the saving made within the same department during the year. If capitalists from Department II were permitted to lend part of their savings to Department I to be invested in its capital, a breakdown would no longer be inevitable. Suppose that total real wages are constant and that real consumption by capitalists increases slowly, so that the real output of Department II rises at a slower rate than productivity, then the amount of labour employed in it is shrinking. The ratio of capital to labour however is rising as a consequence of capital-using technical progress. The output of Department I, and its productive capacity, is growing through time. Capital invested in Department I is accumulating faster than the saving of the capitalists in Department I, and capitalists of Department II, who have no profitable outlet in their own industries for their savings, acquire titles to part of the capital in Department I by supplying the difference between investment in Department I and its own saving.[46] For any increase in the stock of capital of both departments taken together, required by technical progress and demand conditions, there is an appropriate amount of saving, and so long as the total accumulation required and total saving fit, there is no breakdown.
But here we find the clue to the real contradiction. These quantities might conceivably fit, but there is no guarantee that they will. If the ratio of saving which the capitalists (taken together) choose to make exceeds the rate of accumulation dictated by technical progress, the excess savings can only be ‘capitalised’ if there is an outlet for investment outside the system. (The opposite case of deficient savings is also possible. Progress would then be slowed down below the technically possible maximum; but this case is not contemplated by our author, and it would be irrelevant to elaborate upon it.)
Once more we can substitute for a supposed logical necessity a plausible hypothesis about the nature of the real case, and so rescue the succeeding argument. If in reality the distribution of income between workers and capitalists, and the propensity to save of capitalists, are such as to require a rate of accumulation which exceeds the rate of increase in the stock of capital appropriate to technical conditions, then there is a chronic excess of the potential supply of real capital over the demand for it and the system must fall into chronic depression. (This is the ‘stagnation thesis’ thrown out by Keynes and elaborated by modern American economists, notably Alvin Hansen). How then is it that capitalist expansion had not yet (in 1912) shown any sign of slackening?
In chapter xxvi Rosa Luxemburg advances her central thesis—that it is the invasion of primitive economies by capitalism which keeps the system alive. There follows a scorching account of the manner in which the capitalist system, by trade, conquest and theft, swallowed up the pre-capitalist economies,—some reduced to colonies of capitalist nations, some remaining nominally independent—and fed itself upon their ruins. The thread of analysis running through the historical illustrations is not easy to pick up, but the main argument seems to be as follows: As soon as a primitive closed economy has been broken into, by force or guile, cheap mass-produced consumption goods displace the old hand production of the family or village communities, so that a market is provided for ever-increasing outputs from the industries of Department II in the old centres of capitalism, without the standard of life of the workers who consume these commodities being raised.[47] The ever-growing capacity of the export industries requires the products of Department I, thus maintaining investment at home. At the same time great capital works, such as railways, are undertaken in the new territories.[48] This investment is matched partly by savings from surplus extracted on the spot, but mainly by loans from the old capitalist countries. There is no difficulty here in accounting for the inducement to invest, for the new territories yield commodities unobtainable at home.[49] We might set out the essence of the argument as follows: Cloth from Lancashire pays for labour in America, which is used to produce wheat and cotton. These provide wages and raw materials to the Lancashire mills, while the profits acquired both on the plantations and in the mills are invested in steel rails and rolling stock, which open up fresh territories, so that the whole process is continuously expanding. Moreover, apart from profits earned on capital actually invested in the new territories, great capital gains are made simply by acquiring possession of land and other natural resources.[50] Labour to work the resources may be provided by the local dispossessed peasantry or by immigration from the centres of capitalism.[51] Investment in equipment for it to use is more profitable than in that operated by home labour, partly because the wretched condition of the colonial workers makes the rate of exploitation higher,[52] but mainly just because they are on the spot, and can turn the natural resources seized by the capitalists into means of production. No amount of investment in equipment for British labour would produce soil bearing cotton, rubber or copper. Thus investment is deflected abroad[53] and the promise of profit represented by the natural resources calls into existence, by fair means or foul, the labour and capital to make it come true. The process of building up this capital provides an outlet for the old industries and rescues them from the contradictions inherent in deficiency of demand.
The analysis of militarism in the last chapter over-reaches itself by trying to prove too much. The argument is that armaments are built up out of taxes which fall entirely on wages.[54] This can be regarded as a kind of ‘forced saving’ imposed on the workers. These savings are extra to the saving out of surplus. They are invested in armaments, and that ends the story. On this basis the armaments, in themselves, cannot be held to provide an outlet for the investment of surplus (though the use of the armaments, as in the Opium War,[55] to break up primitive economies is a necessary condition for the colonial investment already described) and capital equipment to produce armaments is merely substituted for capital formerly producing consumers’ goods. The analysis which best fits Rosa Luxemburg’s own argument, and the facts, is that armaments provide an outlet for the investment of surplus (over and above any contribution there may be from forced saving out of wages), which, unlike other kinds of investment, creates no further problem by increasing productive capacity (not to mention the huge new investment opportunities created by reconstruction after the capitalist nations have turned their weapons against each other).
All this is perhaps too neat an account of what our author is saying. The argument streams along bearing a welter of historical examples in its flood, and ideas emerge and disappear again bewilderingly. But something like the above seems to be