你无法回到过去改变开头，但你可以从现在开始改变结局。

It is remarkable that a science which began with the consideration of games of chance should have become the most important object of human knowledge.

我不是没有素材，而是没有时间。

The central bank needs to be the adult in the room.

Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.