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140 preceding examination of one of them, in any of the standard treatises.

This is evident, in the first place, from the terminology employed.

In all politico-economic works we are told that the three factors in production are land, labor, and capital, and that the whole produce is primarily distributed into three corresponding parts. Three terms, therefore, are needed, each of which shall clearly express one of these parts to the exclusion of the others. Rent, as defined, clearly enough expresses the first of these parts—that which goes to the owners of land. Wages, as defined, clearly enough expresses the second—that part which constitutes the return to labor. But as to the third term—that which should express the return to capital—there is in the standard works a most puzzling ambiguity and confusion.

Of words in common use, that which comes nearest to exclusively expressing the idea of return for the use of capital, is interest, which, as commonly used, implies the return for the use of capital, exclusive of any labor in its use or management, and exclusive of any risk, except such as may be involved in the security. The word profits, as commonly used, is almost synonymous with revenue; it means a gain, an amount received in excess of an amount expended, and frequently includes receipts that are properly rent; while it nearly always includes receipts which are properly wages, as well as compensations for the risk peculiar to the various uses of capital. Unless extreme violence is done to the meaning of the word, it cannot, therefore, be used in political economy to signify that share of the produce which goes to capital, in contradistinction to those parts which go to labor and to land owners.

Now, all this is recognized in the standard works on political economy. Adam Smith well illustrates how wages and compensation for risk largely enter into profits, pointing out how the large profits of apothecaries and small retail dealers are in reality wages for their labor, and not interest on their capital; and how the great profits