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.
政策变化的影响往往比简单的经济模型所暗示的更为微妙。
I think the only way to conquer fear is to tell it to go to hell.
"The past is never dead. It's not even past."
In science, the most exciting phrase to hear is not 'Eureka!' but 'That's funny...'