David Ricardo：On the Principles of Political Economy and Taxation, Excerpt 151

To produce the wine in Portugal, might require only the labour of eighty men for one year, and to produce the cloth in the same country, might require the labour of ninety men for the same time. It would therefore be advantageous for her to export wine in exchange for cloth. This exchange might even take place, notwithstanding that the commodity imported by Portugal could be produced there with less labour than in England. Though she could make the cloth with the labour of ninety men, she would import it from a country where it required the labour of 100 men to produce it, because it would be advantageous to her rather to employ her capital in the production of wine, for which she would obtain more cloth from England, than she could produce by diverting a portion of her capital from the cultivation of vines to the manufacture of cloth.

Source： https://www.gutenberg.org/ebooks/33310
Locator：Excerpt 151 · Verified：2026-10-19 · Verification：Short excerpt

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