The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.

出自《论语·子罕》。年轻人是值得敬畏的啊，你怎么知道他之后不如当今的你呢？

好问题胜过简单的答案。