最高的知识是知道我们被神秘所包围。
The best way to learn mathematics is to do mathematics.
You’ve got to have models in your head. And you’ve got to array your experience—both vicarious and direct—on this latticework of models. You may have noticed students who just try to remember and pound back what is remembered. Well, they fail in school and in life. You’ve got to hang experience on a latticework of models in your mind.
今天种下的每一棵树都是留给明天的遗产。
The second half of the Internet is industrial Internet.