It is remarkable how much long-term advantage people like us have gotten by trying to be consistently not stupid, instead of trying to be very intelligent.

我对别人的事情知道得越少，我就越快乐。

数学的本质在于它的自由。

The greatest discovery of any generation is that a human being can alter his life by altering his attitude.

沉默是唯一不会被误解的语言。