世界是一个舞台，我们都只是演员。

I have already carried out my duty. I have proved the Poincaré conjecture and I have nothing more to do in mathematics.

"You can't control everything, but you can control how you react to things."

积极心理学既关注弱点也关注优势，既对修复最坏的事情感兴趣，也对建立生活中最好的事情感兴趣。

"We are all broken, that's how the light gets in."

The dynamics of perception are governed by the principle of Prägnanz (good form).

独自守在窗前，怎样才能熬到天黑

The human being is the only animal that thinks about the future.

"Experience is simply the name we give our mistakes."

The decisions of the poor are often heartbreakingly rational.