理解经济波动的关键在于理解人们如何形成预期。

"Courage is not the absence of fear, but the triumph over it."

Every fall is for a better stand.

贪婪是工业的鞭策。

The best villains are those who believe they're the heroes of their own stories.

电磁场的方程是从实验事实中推导出来的。