"The challenge in theoretical computer science is not just to solve problems, but to understand why they are hard to solve."
Happiness is beneficial for the body, but it is grief that develops the powers of the mind.
事实总是友好的,一个人在任何领域获得的每一点证据,都会让他更接近真相。
自由是一个沉重的负担,是精神承担的一个伟大而奇怪的负担。
The greatest glory in living lies not in never falling, but in rising every time we fall.