投资 · 西方古典
托马斯·马尔萨斯：人口论·摘录 122
托马斯·马尔萨斯《人口论》· An Essay on the Principle of Population · 投资
The instances here mentioned are chiefly instances of the effects of mental stimulants on the bodily frame. No person has ever for a moment doubted the near, though mysterious, connection of mind and body. But it is arguing totally without knowledge of the nature of stimulants to suppose, either that they can be applied continually with equal strength, or if they could be so applied, for a time, that they would not exhaust and wear out the subject. In some of the cases here noticed, the strength of the stimulus depends upon its novelty and unexpectedness. Such a stimulus cannot, from its nature, be repeated often with the same effect, as it would by repetition lose that property which gives it its strength.
出处：
https://www.gutenberg.org/ebooks/4239
定位：Excerpt 122 · 核对日期：2026-10-19 · 核验：短摘录
白话
马尔萨斯说，前面举的例子大多是精神刺激影响身体的情况。没人怀疑身心紧密相连，但若以为刺激可以一直以同等强度施加，或者以为即便能持续一阵也不会耗尽对象，那就是完全不懂刺激的性质。有些例子中，刺激的力量来自新奇和意外；这种刺激本质上无法反复使用而保持同样效果，因为重复会让它失去产生力量的那种特性。换句话说，靠新鲜感起作用的兴奋，天然是一次性的，不能当作可长期依赖的养生或延寿手段。
上下文
马尔萨斯反驳葛德文用精神刺激解释健康与长寿的论证。
今日一问
你依赖的某种“提神”方式，是不是正因为新鲜才有效，重复几次就会失效？
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