“That part of a man’s stock,” says Adam Smith (Book II, Chap. I), “which he expects to afford him a revenue, is called his capital,” and the capital of a country or society, he goes on to say, consists of (1) machines and instruments of trade which facilitate and abridge labor; (2) buildings, not mere dwellings, but which may be considered instruments of trade—such as shops, farmhouses, etc.; (3) improvements of land which better fit it for tillage or culture; (4) the acquired and useful abilities of all the inhabitants; (5) money; (6) provisions in the hands of producers and dealers, from the sale of which they expect to derive a profit; (7) the material of, or partially completed, manufactured articles still in the hands of producers or dealers; (8) completed articles still in the hands of producers or dealers. The first four of these he styles fixed capital, and the last four circulating capital, a distinction of which it is not necessary to our purpose to take any note.
Ricardo’s definition is:
“Capital is that part of the wealth of a country which is employed in production, and consists of food, clothing, tools, raw materials, machinery, etc., necessary to give effect to labor.”—Principles of Political Economy, Chapter V.
This definition, it will be seen, is very different from that of Adam Smith, as it excludes many of the things which he includes—as acquired talents, articles of mere taste or luxury in the possession of producers or dealers; and includes some things he excludes—such as food, clothing, etc., in the possession of the consumer.
McCulloch’s definition is:
“The capital of a nation really comprises all those portions of the produce of industry existing in it that may be directly employed either to support human existence or to facilitate production.”—Notes on Wealth of Nations, Book II, Chap. I.
This definition follows the line of Ricardo’s, but is wider. While it excludes everything that is not capable of aiding production, it includes everything that is so capable, without reference to actual use or necessity for use—the horse drawing a pleasure carriage being, according to McCulloch’s view, as he expressly states, as much capital as the horse drawing a plow, because he may, if need arises, be used to draw a plow.
John Stuart Mill, following the same general line as Ricardo and McCulloch, makes neither the use nor the capability of use, but the determination to use, the test of capital. He says:
“Whatever things are destined to supply productive labor with the shelter, protection, tools and materials which the work requires, and to feed and otherwise maintain the laborer during the process, are capital.”—Principles of Political Economy, Book I, Chap. IV.
These quotations sufficiently illustrate the divergence of the masters. Among minor authors the variance is still greater, as a few examples will suffice to show.