 In England, modern society is indisputably most highly and classically developed in economic structure. Nevertheless, even here the stratification of classes does not appear in its pure form. Middle and intermediate strata even here obliterate lines of demarcation everywhere (although incomparably less in rural districts than in the cities). However, this is immaterial for our analysis. We have seen that the continual tendency and law of development of the capitalist mode of production is more and more to divorce the means of production from labour, and more and more to concentrate the scattered means of production into large groups, thereby transforming labour into wage-labour and the means of production into capital. And to this tendency, on the other hand, corresponds the independent separation of landed property from capital and labour, or the transformation of all landed property into the form of landed property corresponding to the capitalist mode of production. The first question to he answered is this: What constitutes a class? and the reply to this follows naturally from the reply to another question, namely: What makes wage-labourers, capitalists and landlords constitute the three great social classes? At first glance the identity of revenues and sources of revenue. There are three great social groups whose members, the individuals forming them, live on wages, profit and ground-rent respectively, on the realisation of their labour-power, their capital, and their landed property. However, from this standpoint, physicians and officials, e.g., would also constitute two classes, for they belong to two distinct social groups, the members of each of these groups receiving their revenue from one and the same source. The same would also be true of the infinite fragmentation of interest and rank into which the division of social labour splits labourers as well as capitalists and landlords-the latter, e.g., into owners of vineyards, farm owners, owners of forests, mine owners and owners of fisheries. [Here the manuscript breaks off.]
Economic Manuscripts: Capital, Vol.3, Chapter 52