投资 · 西方古典
大卫·李嘉图：政治经济学及赋税原理·摘录 297
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
It has, however, been said that capital cannot be withdrawn from the land; that it takes the form of expenses, which cannot be recovered, such as manuring, fencing, draining, &c., which are necessarily inseparable from the land. This is in some degree true; but that capital which consists of cattle, sheep, hay and corn ricks, carts, &c. may be withdrawn; and it always becomes a matter of calculation whether these shall continue to be employed on the land, notwithstanding the low price of corn, or whether they shall be sold, and their value transferred to another employment.
出处：
https://www.gutenberg.org/ebooks/33310
定位：Excerpt 297 · 核对日期：2026-10-19 · 核验：短摘录
白话
有人说资本投到土地上就撤不回来，比如施肥、围栏、排水，这些和土地分不开。李嘉图承认部分对，但牲畜、干草、玉米堆、大车等资本可以撤走。所以地主和农场主总要算账：粮价低时，是继续投入，还是卖掉这些资本转投别处？核心是：农业资本并非全都锁死，可移动的部分要按收益比较来决定去留。今天做农业投资，也要分清哪些是沉没成本，哪些可以灵活转出。
上下文
李嘉图《政治经济学及赋税原理》第十九章，反驳“农业资本完全不能撤出”的说法。
今日一问
你手头的投入里，哪些是撤不回的沉没成本，哪些还能转作他用？
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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