The two most important days in your life are the day you are born and the day you find out why.

变得快乐的技巧几乎完全不同于不悲伤的技巧。

Mathematics is not just about numbers, equations, computations, or algorithms: it is about understanding.

心中没有成见则处事公平，心中没有自我则光明正大。

"The future is always beginning now."

唯一真正的死亡是精神的死亡。