经济学中最重要的是理解个人和企业的行为。

Words have no power to impress the mind without the exquisite horror of their reality.

爱美就是看见光明。

This is a group with many gifts. I'm sure one of your gifts is the gift of a smart and capable brain. I'm confident that's the case because admission is competitive and if there weren't some signs that you're clever， the dean of admission wouldn't have let you in.

The world is a question, not an answer.

精神的平静是最高境界。