大卫·李嘉图：政治经济学及赋税原理·摘录 303

It may be said then of two countries possessing precisely the same quantity of all the necessaries and comforts of life, that they are equally rich, but the value of their respective riches would depend on the comparative facility or difficulty with which they were produced. For if an improved piece of machinery should enable us to make two pair of stockings, instead of one, without additional labour, double the quantity would be given in exchange for a yard of cloth. If a similar improvement be made in the manufacture of cloth, stockings and cloth will exchange in the same proportions as before, but they will both have fallen in value; for in exchanging them for hats, for gold, or other commodities in general, twice the former quantity must be given. Extend the improvement to the production of gold, and every other commodity; and they will all regain their former proportions. There will be double the quantity of commodities annually produced in the country, and therefore the wealth of the country will be doubled, but this wealth will not have increased in value.

出处： https://www.gutenberg.org/ebooks/33310
定位：Excerpt 303 · 核对日期：2026-10-19 · 核验：短摘录

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