政策规则优于自由裁量,因为它们避免了时间不一致性问题。
I’m not playing for the records. I play because I love the game.
A well-designed space can change how people feel and interact with their environment.
关爱别人因而得福的人有,而憎恶别人残害别人因而得祸的人也有啊!