"The difference between correlation and causation is fundamental in empirical work."

教育是老年人的最佳粮食。

Writing is a political act, it opens up space for the unheard.

I think the moment you stop learning, you stop being a writer.

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

有时候，活着本身就是一种反抗。