On The Principles of Political Economy, and Taxation

by David Ricardo

In another part of Mr. Malthus's "inquiry" he observes, "that the immediate cause of rent is obviously the excess of price above the cost of production at which raw produce sells in the market," and in another place he says, "that the causes of the high price of raw produce may be stated to be three:—

"First, and mainly, that quality of the earth, by which it can be made to yield a greater portion of the necessaries of life than is required for the maintenance of the persons employed on the land.

"2dly. That quality peculiar to the necessaries of life of being able to create their own demand, or to raise up a number of demanders in proportion to the quantity of necessaries produced.

"And 3dly. The comparative scarcity of the most fertile land." In speaking of the high price of corn, Mr. Malthus evidently does not mean the price per quarter or per bushel, but rather the excess of price for which the whole produce will sell, above the cost of its production, including always in the term "cost of production," profits as well as wages. One hundred and fifty quarters of corn at 3l. 10s. per quarter, would yield a larger rent to the landlord than 100 quarters at 4l., provided the cost of production were in both cases the same.

High price, if the expression be used in this sense, cannot then be called a cause of rent; it cannot be said "that the immediate cause of rent is obviously the excess of price above the cost of production, at which raw produce sells in the market," for that excess is itself rent. Rent, Mr. Malthus has defined to be "that portion of the value of the whole produce which remains to the owner of the land, after all the outgoings belonging to its cultivation, of whatever kind, have been paid, including the profits of the capital employed, estimated according to the usual and ordinary rate of the profits of agricultural stock at the time being." Now whatever sum this excess may sell for, is money rent; it is what Mr. Malthus means by "the excess of price above the cost of production at which raw produce sells in the markets;" and therefore in an inquiry into the causes which may elevate the price of raw produce, compared with the cost of production, we are inquiring into the causes which may elevate rent.

In reference to the first cause of the rise of rent, Mr. Malthus has the following observations: "We still want to know why the consumption and supply are such as to make the price so greatly exceed the cost of production, and the main cause is evidently the fertility of the earth in producing the necessaries of life. Diminish this plenty, diminish the fertility of the soil, and the excess will diminish; diminish it still further, and it will disappear." True, the excess of necessaries will diminish and disappear, but that is not the question. The question is, whether the excess of their price above the cost of their production will diminish and disappear, for it is on this, that money rent depends. Is Mr. Malthus warranted in his inference, that because the excess of quantity will diminish and disappear, therefore "the cause of the high price of the necessaries of life above the cost of production is to be found in their abundance, rather than in their scarcity; and is not only essentially different from the high price occasioned by artificial monopolies, but from the high price of those peculiar products of the earth, not connected with food, which may be called natural and necessary monopolies?"

Are there no circumstances under which the fertility of the land, and the plenty of its produce may be diminished, without occasioning a diminished excess of its price above the cost of production, that is to say, a diminished rent? If there are, Mr. Malthus's proposition is much too universal; for he appears to me to state it as a general principle, true under all circumstances, that rent will rise with the increased fertility of the land, and will fall with its diminished fertility.

Mr. Malthus would undoubtedly be right, if, in proportion as the land yielded abundantly, a greater share of the whole produce were paid to the landlord; but the contrary is the fact: when no other but the most fertile land is in cultivation, the landlord has the smallest share of the whole produce, as well as the smallest value, and it is only when inferior lands are required to feed an augmenting population, that both the landlord's share of the whole produce, and the value he receives, progressively increase.

Suppose that the demand is for a million of quarters of corn, and that they are the produce of the land actually in cultivation. Now, suppose the fertility of all the land to be so diminished, that the very same lands will yield only 900,000 quarters. The demand being for a million of quarters, the price of corn would rise, and recourse must necessarily be had to land of an inferior quality sooner than if the superior land had continued to produce a million of quarters. But it is this necessity of taking inferior land into cultivation which is the cause of the rise of rent. Rent, it must be remembered, is not in proportion to the absolute fertility of the land in cultivation, but in proportion to its relative fertility. Whatever cause may drive capital to inferior land, must elevate rent; the cause of rent being, as stated by Mr. Malthus in his third proposition, "the comparative scarcity of the most fertile land." The price of corn will naturally rise with the difficulty of producing the last portions of it; but as the cost of production will not increase, as wages and profits taken together will continue always of the same value,[51] it is evident that the excess of price above the cost of production, or, in other words, rent, must rise with the diminished fertility of the land, unless it is counteracted by a great reduction of capital, population, and demand. It does not appear then that Mr. Malthus's proposition is correct: rent does not immediately and necessarily rise or fall with the increased or diminished fertility of the land; but its increased fertility renders it capable of paying at some future time an augmented rent. Land possessed of very little fertility can never bear any rent; land of moderate fertility may be made, as population increases, to bear a moderate rent; and land of great fertility a high rent; but it is one thing to be able to bear a high rent, and another thing actually to pay it. Rent may be lower in a country where lands are exceedingly fertile than in a country where they yield a moderate return, it being in proportion rather to relative than absolute fertility—to the value of the produce, and not to its abundance. Mr. Malthus says, that the "cause of the excess of price of the necessaries of life above the cost of production, is to be found in their abundance rather than their scarcity, and is essentially different from the high price of those peculiar products of the earth, not connected with food, which may be called natural and necessary monopolies."

In what are they essentially different? Would not the abundance of those peculiar products of the earth cause a rise of rent, if the demand for them at the same time increased? and can rent ever rise, whatever the commodity produced may be, from abundance merely, and without an increase of demand?