Thus the term labor includes all human exertion in the production of wealth, and wages, being that part of the produce which goes to labor, includes all reward for such exertion. There is, therefore, in the politico-economic sense of the term wages no distinction as to the kind of labor, or as to whether its reward is received through an employer or not, but wages means the return received for the exertion of labor, as distinguished from the return received for the use of capital, and the return received by the landholder for the use of land. The man who cultivates the soil for himself receives his wages in its produce, just as, if he uses his own capital and owns his own land, he may also receive interest and rent; the hunter’s wages are the game he kills; the fisherman’s wages are the fish he takes. The gold washed out by the self-employing gold-digger is as much his wages as the money paid to the hired coal miner by the purchaser of his labor,[7] and, as Adam Smith shows, the high profits of retail storekeepers are in large part wages, being the recompense of their labor and not of their capital. In short, whatever is received as the result or reward of exertion is “wages.” This is all it is now necessary to note as to “wages,” but it is important to keep this in mind. For in the standard economic works this sense of the term wages is recognized with greater or less clearness only to be subsequently ignored. But it is more difficult to clear away from the idea of capital the ambiguities that beset it, and to fix the scientific use of the term. In general discourse, all sorts of things that have a value or will yield a return are vaguely spoken of as capital, while economic writers vary so widely that the term can hardly be said to have a fixed meaning. Let us compare with each other the definitions of a few representative writers: “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: