I don't believe in luck. I believe in hard work.
数学的语言是宇宙的语言，通过学习它，我们可以理解宇宙。
Sustainability isn't a choice anymore—it's a responsibility we owe to future generations.
译文：上天虽有好生之德，也难以拯救一心求死的人，人能造福行善，就是避免灾祸的大功德。赏析：人生最大的悲哀莫过于内心已死，失去了斗志。失败不可怕，我们要善于在失败中重整旗鼓，继续向前。人多做好事，就是种善因，那么必将结善果。
你必须无畏地追求让你灵魂燃烧的东西。
History will prove who truly serves the people.
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.