遵循天道，顺应地理，万物皆得其所。所以，抚慰他就安宁，折腾他就痛苦。尊崇他就可以为将领，贬斥则为俘虏。

The Soviet Union was a civilization of fear, where people lived in constant dread of the knock on the door at night.

在数学中，你并不理解事物。你只是习惯了它们。

用爱和智慧去指导你的生活。

我不是女权主义者，我是人文主义者。

The best way to learn econometrics is by doing—working with real data and real problems.

"Life is what happens when you're busy making other plans."