“One thing is clear; namely, that since the periodic recurrence of crises is a product of capitalist society, the causes must lie in the nature of capital. It must be a matter of a disturbance arising from the specific character of society. The narrow basis provided by the consumption relations of capitalist production constitutes, from that point of view, the general condition of crises, since the impossibility of enlarging this basis is the precondition for the stagnation of the market. If consumption could be readily expanded, overproduction would not be possible. But under capitalist conditions expansion of consumption means a reduction in the rate of profit. For an increase in consumption by the broad masses of the population depends upon a rise in wages, which would reduce the rate of surplus value and hence the rate of profit. Consequently, if the demand for labour, as a result of the accumulation of capital, increases so greatly that the rate of profit is reduced, to a point (at the extreme) where an increased quantity of capital would not produce a larger profit than did the original capital, then accumulation must come to an end, since its essential purpose - the increase of profit - would not be achieved. This is the point at which one necessary precondition of accumulation, the expansion of consumption, enters into contradiction with another precondition, namely the realization of profit. The conditions of realization cannot be reconciled with the expansion of consumption, and since the former are decisive, the contradiction develops into a crisis. That is why the narrow basis of consumption is only a general condition of crises, which cannot be explained simply by 'underconsumption'. Least of all can the periodic character of crises be explained in this way, since no periodic phenomenon can be explained by constant conditions. [pp. 241-242]” OverproductionCapitalist CrisisUnderconsumption Book:Finance Capital: A study in the latest phase of capitalist development Source: Finance Capital: A study in the latest phase of capitalist development