Cyclopædia of Political Science, Political Economy, and the
Political History of the United States INTEREST is the product,
the increase (incrementum), the return (reditus) from capital.
When interest represents the sum paid at fixed periods by the
borrower to the loaner of capital, it retains its generic name,
or takes the more special designation of rent or income. The
price charged by the proprietor for the use of land leased by
him, is rent. The term income is more particularly applied to
the product of capital employed in commerce, agriculture or
manufactures. In brief, interest signifies equally the profit
the capitalist derives from the direct employment of his
capital, and the return he receives for granting its use to
others for a certain length of time. —No difficulty can arise
with respect to the profits of a capitalist who employs his own
capital: the interest on capital is in this case blended with
the product of his labor. If a field be cultivated, or a
workshop used by its owner, he has to rend