"You have to love yourself before you can love someone else."

The true value of a forest isn't measured in board feet, but in biodiversity and carbon sequestration.

解释：放开人民的嘴，让他们有话直说，政事的善恶好坏就都可以清楚。

The best advice I can give anybody is to stay humble and work hard.

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.

Agricultural research should address national needs and solve practical problems, it cannot be separated from production practice.