Essays on some unsettled Questions of Political Economy

We say, the production and distribution, not, as is usual with writers on this science, the production, distribution, and consumption. For we contend that Political Economy, as conceived by those very writers, has nothing to do with the consumption of wealth, further than as the consideration of it is inseparable from that of production, or from that of distribution. We know not of any laws of the consumption of wealth as the subject of a distinct science: they can be no other than the laws of human enjoyment. Political economists have never treated of consumption on its own account, but always for the purpose of the inquiry in what manner different kinds of consumption affect the production and distribution of wealth. Under the head of Consumption, in professed treatises on the science, the following are the subjects treated of: 1st, The distinction between productive and unproductive consumption; 2nd, The inquiry whether it is possible for too much wealth to be produced, and for too great a portion of what has been produced to be applied to the purpose of further production; 3rd, The theory of taxation, that is to say, the following two questions—by whom each particular tax is paid (a question of distribution), and in what manner particular taxes affect production.

The physical laws of the production of useful objects are all equally presupposed by the science of Political Economy: most of them, however, it presupposes in the gross, seeming to say nothing about them. A few (such, for instance, as the decreasing ratio in which the produce of the soil is increased by an increased application of labour) it is obliged particularly to specify, and thus seems to borrow those truths from the physical sciences to which they properly belong, and include them among its own.

The science of legislation is an incorrect and misleading expression. Legislation is making laws. We do not talk of the science of making anything. Even the science of government would be an objectionable expression, were it not that government is often loosely taken to signify, not the act of governing, but the state or condition of being governed, or of living under a government. A preferable expression would be, the science of political society; a principal branch of the more extensive science of society, characterized in the text.

One of the strongest reasons for drawing the line of separation clearly and broadly between science and art is the following:—That the principle of classification in science most conveniently follows the classification of causes, while arts must necessarily be classified according to the classification of the effects, the production of which is their appropriate end. Now an effect, whether in physics or morals, commonly depends upon a concurrence of causes, and it frequently happens that several of these causes belong to different sciences. Thus in the construction of engines upon the principles of the science of mechanics, it is necessary to bear in mind the chemical properties of the material, such as its liability to oxydize; its electrical and magnetic properties, and so forth. From this it follows that although the necessary foundation of all art is science, that is, the knowledge of the properties or laws of the objects upon which, and with which, the art dons its work; it is not equally true that every art corresponds to one particular science. Each art presupposes, not one science, but science in general; or, at least, many distinct sciences.