The only source of knowledge is experience.
知识的唯一来源是经验。
In the midst of winter, I found there was, within me, an invincible summer.
If you’re going to talk the talk, you’ve got to walk the walk.
I don't do fashion. I am fashion.
科学中最重要的事情是不要停止提问。
NP-completeness is not just a theoretical curiosity; it has profound implications for practical computing.