David Ricardo：On the Principles of Political Economy and Taxation, Excerpt 65

But improvements in agriculture are of two kinds: those which increase the productive powers of the land, and those which enable us to obtain its produce with less labour. They both lead to a fall in the price of raw produce; they both affect rent, but they do not affect it equally. If they did not occasion a fall in the price of raw produce, they would not be improvements; for it is the essential quality of an improvement to diminish the quantity of labour before required to produce a commodity; and this diminution cannot take place without a fall of its price or relative value.

Source： https://www.gutenberg.org/ebooks/33310
Locator：Excerpt 65 · Verified：2026-10-19 · Verification：Short excerpt

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