Mathematics is a creative endeavor, just like art or music.

If the job has been correctly done when a common stock is purchased, the time to sell it is—almost never.

我们都在等待什么，即使我们不知道那是什么。

Every time you fail, you come one step closer to success.

技术不仅仅是关于小工具，而是关于使用它们的人。

I'm proof that you can come from nothing and make something of yourself.

如果每一天都过得很充实而富有意义，世间的岁月和时间，算起来还是蛮长的呢，然而终日埋头苦干，匆匆忙忙走过的人，哪里有功夫停下来思考这些道理；天地很开阔，世界很大，而人们往往局限于自己的视野和格局，只停留在很狭小的范围里；风花雪月原本无意，而附庸风雅的人却在那里自寻烦恼。

Policy alone won’t save our forests—it takes action from individuals, businesses, and governments.

The world is so full of people, so crowded with these miracles, that they become commonplace and we forget.