爱情不需要理由。它来自心灵非理性的智慧。

As you grow older, you will discover that you have two hands, one for helping yourself, the other for helping others.

The truth is, the past is all we have. We can't change it, but we can learn from it.

政策规则优于自由裁量，因为它们消除了时间不一致性问题。