The greatest thing in the world is to know how to belong to oneself.

I don't rap for dead presidents. I'd rather see the president dead.

Life is too short to hold grudges.

Judge a man by his questions rather than by his answers.

过去是阴影，未来是梦想。我们拥有的只有现在。

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.

诗歌是灵魂的语言。