But wait! Even under the sway of capitalism, society does not consist exclusively of capitalists and wage labourers. Apart from these two classes, there are a host of other people: the landowners, the salaried employees, the liberal professions such as doctors, lawyers, artists and scientists. Moreover, there is the Church and its servants, the Clergy, and finally the State with its officials and armed forces. All these strata of the population can be counted, strictly speaking, neither among the capitalist nor among the working class. Yet society has to feed and support them. Perhaps it is they, these strata apart from the capitalists and wage labourers, who call forth enlarged reproduction by their demand. But this seeming solution cannot stand up to a closer scrutiny. The landowners must as consumers of rent, i.e. of part of the surplus value, quite obviously be numbered among the capitalist class; since we are here concerned with the surplus value in its undivided, primary form, their consumption is already allowed for in the consumption of the capitalist class. The liberal professions in most cases obtain their money, i.e. the assignment to part of the social product, directly or indirectly from the capitalist class who pay them with bits of their own surplus value. And the same applies to the Clergy, with the difference only that its members also obtain their purchasing power in part from the workers, i.e. from wages. The upkeep of the State, lastly, with its officers and armed forces is borne by the rates and taxes, which are in their turn levied upon either the surplus value or the wages. Within the limits of Marx's diagram there are in fact only the two sources of income in a society: the labourers' wages and the surplus value. All the strata of the population we have mentioned as apart from the capitalists and the workers, are thus to be taken only for joint consumers of these two kinds of income. Marx himself rejects any suggestion that these 'third persons' are more than a subterfuge: 'All members of society not directly engaged in reproduction, with or without labour, can obtain their share of the annual produce of commodities--in other words, their articles of consumption ... only out of the hands of those classes who are the first to handle the product, that is to say, productive labourers, industrial capitalists, and real estate owners. To that extent their revenues are substantially derived from wages (of the productive labourers), profit and ground rent, and appear as indirect derivations when compared to these primary sources of revenue. But, on the other hand, the recipients of these revenues, thus indirectly derived, draw them by grace of their social functions, for instance that of a king, priest, professor, prostitute, soldier, etc., and they may regard these functions as the primary sources of their revenue.'[107]