The only person you should try to be better than is the person you were yesterday.
听到了却没有亲眼见到，即使听得再多，也必有谬误；亲眼见到了却不能理解，即使记得再多，也必有错误；知道了却不去实际践行，就是知识再多，也必然困惑。
We are all searching for something, but we don't always know what it is.
The most important thing in science is not so much to obtain new facts as to discover new ways of thinking about them.