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.

"The truth is rarely pure and never simple."

The true way is along a rope that is not spanned high in the air, but just above the ground. It seems intended more to cause stumbling than to be walked upon.

幸福的关键是有梦想。成功的关键是实现你的梦想。

Laughing is good for you if you don't kill yourself.

种树的最佳时间是20年前，其次是现在。

无限的概念不仅仅是一个数学抽象，而是一个物理现实。