David Ricardo：On the Principles of Political Economy and Taxation, Excerpt 58

The exchangeable value of all commodities, whether they be manufactured, or the produce of the mines, or the produce of land, is always regulated, not by the less quantity of labour that will suffice for their production under circumstances highly favourable, and exclusively enjoyed by those who have peculiar facilities of production; but by the greater quantity of labour necessarily bestowed on their production by those who have no such facilities; by those who continue to produce them under the most unfavourable circumstances; meaning--by the most unfavourable circumstances, the most unfavourable under which the quantity of produce required renders it necessary to carry on the production.

Source： https://www.gutenberg.org/ebooks/33310
Locator：Excerpt 58 · Verified：2026-10-19 · Verification：Short excerpt

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