Happiness is not something ready made. It comes from your own actions.
The study of computational complexity is not just about solving problems, but also about understanding the limits of what can be computed.
我们不追随潮流，我们只做对我们来说感觉对的事情。
"The most dangerous kind of waste is the waste we do not recognize."
有时最简单的问题会引出最深奥的理论。
The deeper you go into mathematics, the more you realize how interconnected everything is.