Of all the things which wisdom provides to make us entirely happy, much the greatest is the possession of friendship.

The best leaders don't create followers; they create more leaders.

"The truth is rarely pure and never simple."

可持续性不是一个流行词，而是我们对后代的责任。

不确定性不能成为不作为的借口。

幸福是通过美德获得的，是人自己意愿获得的善。