"The challenge is to make the impossible look believable."

最好的写作是使熟悉的事物陌生化，使陌生的事物熟悉化。

我的箴言一贯如此：英雄不问来路。

我们在知识中失去的智慧在哪里？我们在信息中失去的知识在哪里？

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.

国家是人类社会中最重要的机构，其强弱是社会成败的关键决定因素。