5. If angels are to hold the collective ownership of capital and the government of men in the Socialist Commonwealth; or if every citizen, retaining in his private capacity all the follies and vices that human flesh is heir to, shall still be vested in angelic attributes, whenever he sits as legislator or judge, or acts on the executive of a Socialist commission,--then this new Commonwealth is likely to prove a blessed substitute for the rule of the higher classes, which in one way or another has hitherto obtained in civilized society. But till angelic attributes descend on earth, we shall not find a cure for the evils of cities and countries in simply doubling the functions of government, and placing all sovereign rights, and all the most important of proprietory rights and duties, in the hands of a numerical majority. 6. Capital, as we have seen, is a collection of market or exchange values in view of further exchange. If we call supply S and demand D, market value is a social estimate of the fraction D/S. Another definition has been given: Market value is a social estimate of the amount of socially useful labour which a given article contains. This second definition contains this much of truth in it, that directly as the demand for an article, and inversely as the supply of the same, is the amount of labour which men find it worth their while to spend upon that article for commercial purposes. Otherwise the definition is unsatisfactory and involved, and leads to endless discussion. Without entering into these discussions, we will remark an ambiguity in the term on which they all roll, the term _labour_, which ambiguity is at the bottom of three fourths of the sophistries of popular Socialism.