心要安放在身体里，念头不越出本分，行为不超越规矩。

一个好农民不过是一个有腐殖质意识的巧手人。

网络是一种以有意义的方式连接人们的方式，这是以前不可能的方式。

It is one thing to show a man that he is in an error, and another to put him in possession of truth.

And I hope you will come back here to Harvard 30 years from now and reflect on what you have done with your talent and your energy. I hope you will judge yourselves not on your professional accomplishments alone, but also on how well you have addressed the world's deepest inequities…on how well you treated people a world away who have nothing in common with you but their humanity.

Quality is not a technique, it is a philosophy.