The value of an economic model lies in its ability to explain and predict.
To live is the rarest thing in the world. Most people exist, that is all.
市场总是对的，价格永远不会高到不能买或低到不能卖。
It always seems impossible until it's done.
Never stop learning because the world never stops changing.
我们所爱的东西告诉我们我们是什么样的人。