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The interest of money is always a derivative revenue, which, if

it is not paid from the profit which is made by the use of the

money, must be paid from some other source of revenue, unless

perhaps the borrower is a spendthrift, who contracts a second

debt in order to pay the interest of the first. The revenue which

proceeds altogether from land, is called rent, and belongs to the

landlord. The revenue of the farmer is derived partly from his

labour, and partly from his stock. To him, land is only the

instrument which enables him to earn the wages of this labour,

and to make the profits of this stock. All taxes, and all the

revenue which is founded upon them, all salaries, pensions, and

annuities of every kind, are ultimately derived from some one or

other of those three original sources of revenue, and are paid

either immediately or mediately from the wages of labour, the

profits of stock, or the rent of land.