Principles of Political Economy (1848) by John Stuart Mill was one of the most important economics or political economy textbooks of the mid-nineteenth century. It was revised until its seventh edition in 1871, shortly before Mill's death in 1873, and republished in numerous other editions. Beside discussing descriptive issues such as which nations tended to benefit more in a system of trade based on comparative advantage (Mill's answer: those with more elastic demands for other countries' goods), the work also discussed normative issues such as ideal systems of political economy, critiquing proposed systems such as communism and socialism. Along with A System of Logic, Principles of Political Economy established Mill's reputation as a leading public intellectual. Mill's sympathetic attitude in this work and in other essays toward contemporary socialism, particularly Fourierism, earned him esteem from some of the working class as one of their intellectual champions.
Preface and Preliminary Remarks Mill's Principles were written in a style of prose far flung from the introductory texts of today. Devoid of the mathematical graphs and formulae that were only developed after his death, principally by Alfred Marshall, Mill wrote with the rich tone of grandeur that is found in all his books. His book continued to be used well into the twentieth century as the foundational textbook, for instance in Oxford University until 1919.
Preliminary remarks
Book I Production I Of the Requisites of Production Mill explores the nature of production, beginning with labour and its relationship to nature. He starts by stating, that the "requisites of production are two: labour, and appropriate natural objects." A discussion follows of man's connection to the natural world, and how man must labour to utilise almost anything found in the natural world. He uses a rich array of imagery, from the sewing of cloth, to the turning of wheels and the creation of steam. Man has found a way to harness nature, so that "the muscular action necessary for this is not constantly renewed, but performed once for all, and there is on the whole a great economy of labour." He then turns on the view of who "takes the credit" for industry. "Some writers," he says,
"have raised the question, whether nature gives more assistance to labour in one kind of industry or in another; and have said that in some occupations labour does most, in others nature most. In this, however, there seems much confusion of ideas. The part which nature has in any work of man, is indefinite and incommensurable. It is impossible to decide that in any one thing nature does more than in any other. One cannot even say that labour does less. Less labour may be required; but if that which is required is absolutely indispensable, the result is just as much the product of labour, as of nature. When two conditions are equally necessary for producing the effect at all, it is unmeaning to say that so much of it is produced by one and so much by the other; it is like attempting to decide which half of a pair of scissors has most to do in the act of cutting; or which of the factors, five and six, contributes most to the production of thirty." He refers to former French Economists and Adam Smith, who thought land rents were higher because there was more nature being provided. In fact, says Mill, the simple answer is that land is scarce, which is what enables greater rent exaction. He mentions that many things are limited in abundance, for instance, Arctic whale fishing, which could not keep supplied the demand. This alludes to an introductory principle of value, that "as soon as there is not so much of the thing to be had, as would be appropriated and used if it could be obtained for asking; the ownership or use of the natural agent acquires an exchangeable value."
II Of Labour as an Agent of Production III Of Unproductive Labour IV Of Capital Capital, says Mill, is "the accumulated stock of the produce of labour". Though its nature is misunderstood. He gives an example of the consumption of food, as opposed to assets allocated for production.
"The distinction, then, between Capital and Not-capital, does not lie in the kind of commodities, but in the mind of the capitalist – in his will to employ them for one purpose rather than another; and all property, however ill adapted in itself for the use of labourers, is a part of capital, so soon as it, or the value to be received from it, is set apart for productive reinvestment." Capital, like labour, can be unemployed, and Mill gives an example of inefficient taxation of productive capital. Then he observes the surplus to living standards created by industrialism.
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