关于自由市场最重要的一个核心事实是，除非双方都受益，否则不会发生交换。

技术不仅仅是一种工具，它可以让学习者拥有以前可能没有的声音。

The rule, or measuring rod, which the behaviorist puts in front of him always is: Can I describe this bit of behavior I see in terms of "stimulus and response"?

赚钱的最好方法是买入一些东西，然后什么都不做。

The desire for recognition, the thymotic part of the soul, is the most fundamentally human part of the soul.

Education is the most powerful tool we have to transform aquaculture practices.