戒烟很容易，我已经戒了一千次。

You can't let praise or criticism get to you. It's a weakness to get caught up in either one.

资本资产定价模型（CAPM）是理解风险-回报权衡的有用工具，但它远非完美。

"A book is a friend that never judges you."

事情总是出乎意料！

领导力是关于做出艰难的决定并坚持下去。

做数学就是参与发现与猜想、直觉与灵感的过程。

有人今天坐在树荫下，因为他很久以前种了一棵树。