The most important thing is to be true to yourself.

"The past is a puzzle, and the historian is the person who tries to put the pieces together."

A ship in port is safe, but that's not what ships are built for.

I'm not going to compare myself to anybody. I'm going to do the best I can do. I'm going to work as hard as I can work. And I'm going to be the best that I can be.

可持续性不是一种选择；而是我们对后代的责任。