诚信是商业中最重要货币。一旦失去它，你就失去了一切。

The real challenge in computer science is not to write programs, but to understand the nature of computation.

The greatest obstacle to being heroic is the doubt whether one may not be going to prove one's self a fool; the truest heroism is to resist the doubt, and the profoundest wisdom to know when it ought to be resisted, and when it be obeyed.

繁荣的森林证明了自然的恢复力和人类的守护。

I am tomorrow, or some future day, what I establish today. I am today what I established yesterday or some previous day.