可持续性不是一种选择,而是任何负责任企业的唯一前进道路。
I was seldom able to see an opportunity until it had ceased to be one.
政策规则优于自由裁量,因为它们消除了时间不一致性问题。
我本人是个乐观主义者,因为做别的貌似没什么用。