如果你做不到，那就去教别人。
If you cannot do it, then teach.
The truth is often hidden in the silence between words.
"The only thing necessary for the triumph of evil is for good men to do nothing."
"What is said cannot be unsaid, and what is heard cannot be unheard."
上帝很少揭示未来。当他这样做时，只有一个原因：这是一个注定要被改变的未来。
The most important skill for an economist is the ability to think clearly about trade-offs.