投资 · 西方古典
大卫·李嘉图：政治经济学及赋税原理·摘录 67
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
But there are mines of various qualities, affording very different results, with equal quantities of labour. The metal produced from the poorest mine that is worked, must at least have an exchangeable value, not only sufficient to procure all the clothes, food, and other necessaries consumed by those employed in working it, and bringing the produce to market, but also to afford the common and ordinary profits to him who advances the stock necessary to carry on the undertaking. The return for capital from the poorest mine paying no rent, would regulate the rent of all the other more productive mines. This mine is supposed to yield the usual profits of stock. All that the other mines produce more than this, will necessarily be paid to the owners for rent. Since this principle is precisely the same as that which we have already laid down respecting land, it will not be necessary further to enlarge on it.
出处：
https://www.gutenberg.org/ebooks/33310
定位：Excerpt 67 · 核对日期：2026-10-19 · 核验：短摘录
白话
不同矿藏品质有好有坏，投入同样多的劳动，产出却大不一样。最贫瘠的矿也必须能卖出足够的价钱，不仅要抵偿挖矿、运矿所花的衣服、食物等一切开销，还要让出钱经营的人拿到普通利润。这个最贫瘠的矿不交地租，只赚普通利润，它的收益就成了其他更富的矿定地租的基准。更富的矿产出超过它的部分，就作为地租交给矿主。这和土地的地租道理完全一样，不必再多说。
上下文
李嘉图《政治经济学及赋税原理》讨论地租的章节，他把矿山地租和土地地租类比，说明级差地租原理。
今日一问
你所在行业里，最差条件下仍能存活的企业，是不是在给更优者定价格和利润的基准？
公版作品；原文逐字取自 Project Gutenberg，仅摘录段落并附全书链接。
你的邮箱
只用于发送原典。不发广告，不卖名单。
本文本为公版；底本与原文链接见上。 版权