In mathematics, the art of proposing a question must be held of higher value than solving it.
所以,在收成好的年头,百姓就仁义善良;遇到荒年,那么百姓也会吝啬而凶恶。 
Market design is an ongoing experiment—what works today may need adjustment tomorrow.
我们不必比别人更聪明,但必须比别人更有纪律性。