一个人，如果不是他们留下的痕迹，又是什么呢？
数学家研究纯数学不是因为它有用；他研究它是因为他喜欢它，他喜欢它是因为它美丽。
The world we see that seems so insane is the result of a belief system that is not working. To perceive the world differently， we must be willing to change our belief system， let the past slip away， expand our sense of now， and dissolve the fear in our minds.
做出伟大工作的唯一方法就是热爱你所做的事情。
If you're not stubborn, you'll give up on experiments too soon. And if you're not flexible, you'll pound your head against the wall and you won't see a different solution to a problem you're trying to solve.