投资 · 西方古典
大卫·李嘉图：政治经济学及赋税原理·摘录 331
大卫·李嘉图《政治经济学及赋税原理》· On the Principles of Political Economy and Taxation · 投资
A bounty on the exportation of manufactures will undoubtedly, as Dr. Smith contends, raise the market price of manufactures, but it will not raise their natural price. The labour of 200 men will produce double the quantity of these goods that 100 could produce before; and consequently, when the requisite quantity of capital was employed in supplying the requisite quantity of manufactures, they would again fall to their natural price. It is then only during the interval after the rise in the market price of commodities, and before the additional supply is obtained, that the manufacturers will enjoy high profits; for as soon as prices had subsided, their profits would sink to the general level.
出处：
https://www.gutenberg.org/ebooks/33310
定位：Excerpt 331 · 核对日期：2026-10-19 · 核验：短摘录
白话
李嘉图同意斯密博士的观点：出口补贴会提高制成品的市场价格，但不会提高其自然价格。因为200个工人的劳动会生产出以前100个工人两倍的数量；当足够资本投入生产足够制成品后，价格会回落到自然价格。因此，只有在市场价格上涨后、额外供给到来前的这段时间，制造商才能获得高利润；一旦价格回落，利润就降到一般水平。核心是，制成品出口补贴只带来暂时的高利润，不会持久。
上下文
李嘉图在《政治经济学及赋税原理》中比较制成品出口补贴与谷物补贴的不同效果。
今日一问
如果某个行业因补贴获得高利润，但很快因供给增加而利润下降，投资者应如何应对？
公版作品；原文逐字取自 Project Gutenberg，仅摘录段落并附全书链接。
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