The purpose of life is not to be happy. It is to be useful, to be honorable, to be compassionate, to have it make some difference that you have lived and lived well.

I didn't think I was ever going to get a sensible question.

释义：如若辅佐君王的大臣之间能齐心协力，那么国家便会安定太平；如若君臣互相猜疑，互不信任，那么最终国家会四分五裂。

Policy alone won’t save our forests—it takes action from individuals, businesses, and governments.

True innovation requires both creativity and discipline.