事物忌讳到达顶点，事情避免极其完美，人则忌讳飞黄腾达。

I constantly see people rise in life who are not the smartest, sometimes not even the most diligent, but they are learning machines. They go to bed every night a little wiser than they were when they got up and boy does that help, particularly when you have a long run ahead of you.

The stock market is filled with individuals who know the price of everything, but the value of nothing.

坚持非常重要。你不应该放弃，除非你被迫放弃。

反馈的研究就是稳定性的研究。

学习数学的唯一方法就是做数学。