未来属于今天为之准备的人。
You must be the change you wish to see in the world.
要理解我们是谁,我们必须首先理解我们来自哪里。
暂时的东西有时比永久的东西更有力量。
Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.