死亡不是终点，而是一种状态的改变。

Your smarts will come in handy because you will travel in a land of marvels. We humans -- plodding as we are -- will astonish ourselves. We'll invent ways to generate clean energy and a lot of it. Atom by atom， we'll assemble tiny machines that will enter cell walls and make repairs. This month comes the extraordinary but also inevitable news that we've synthesized life. In the coming years， we'll not only synthesize it， but we'll engineer it to specifications. I believe you'll even see us understand the human brain. Jules Verne， Mark Twain， Galileo， Newton -- all the curious from the ages would have wanted to be alive most of all right now. As a civilization， we will have so many gifts， just as you as individuals have so many individual gifts as you sit before me.

我们必须始终努力做正确的事，即使这很困难。

当我们爱时，我们总是努力变得比现在更好。当我们努力变得更好时，周围的一切也会变得更好。

Innovation in energy must balance environmental responsibility with economic viability.

光是建筑中最重要的元素。没有光，就没有空间。

摄影不仅仅是捕捉图像；它是通过光影捕捉情感和讲述故事。

I know you are here to kill me. Shoot, coward, you are only going to kill a man.

A philosophical problem has the form: 'I don't know my way about.'

——2004年在南京航空学院上的演讲

居家时不是有才德的人，入朝做官也不是好官。小时候不是一个好的学生，将来不能够成为一个有才德的人。

我们唯一能知道的是我们一无所知，这是人类智慧的最高境界。