年轻时你以为会有很多朋友。但随着年龄增长，你意识到一只手就能数得过来。

We must balance economic growth with environmental stewardship.

"I believe in the power of books to change lives."

领导力意味着今天做出艰难的决定，明天让所有人受益。

合作是企业的力量，没有合作就没有共赢。

The act of writing is an act of optimism. You would not take the trouble to do it if you felt it didn't matter.

数学是书写宇宙的语言。