Policy rules are better than discretion because they avoid the time inconsistency problem.
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。
如果不理解两者，就无法理解个人的生活或社会的历史。
Core technologies cannot be bought; they must be developed independently.
Sometimes we get sad about things and we don’t like to tell other people that we are sad about them.
写作是一种理解世界的方式，也是理解自己的方式。
我没时间恨那些恨我的人，因为我忙着爱那些爱我的人。
The artist must be a servant of the unknown.