"What good is the warmth of summer, without the cold of winter to give it sweetness."

I don't have time to worry about who doesn't like me. I'm too busy loving the people who love me.

市场失灵的程度永远不会为零，但政府失灵的程度同样如此。

身体劳累而不休息，就会疲困；精力使用过度而不止歇，就会衰竭。