Economics is at its best when it helps us solve real-world problems in a rigorous and transparent way.
The mind-body problem is not just a local problem, but one that confronts us with a deep mystery about the universe.
坏人活着是为了吃与喝,而好人却是为了活着才吃与喝。
笑,全世界便与你同声笑,哭,你便独自哭。
The internet is a tool that can be used for good or bad, and it's up to us to decide how we use it.