若你感到寂寞，那只是因为你与自己相处得不够好。

如果没有冬天的寒冷来赋予它甜蜜，夏天的温暖又有什么好处呢？

股市的主要目的是让尽可能多的人成为傻瓜。

倾听公司里的每个人，并想办法让他们说话。

The state, therefore, has not existed from all eternity. There have been societies that did without it, that had no notion of the state or state power. At a certain stage of economic development, which was necessarily bound up with the split of society into classes, the state became a necessity.

学习计量经济学的最佳方法是通过实践——处理真实的数据和真实的问题。