The P versus NP problem is one of the most important problems in computer science.

蒸汽机中运动的产生总是伴随着一个我们应关注的情况，即热量的平衡重建。

Civilization is a stream with banks. The stream is sometimes filled with blood from people killing, stealing, shouting and doing the things historians usually record, while on the banks, unnoticed, people build homes, make love, raise children, sing songs, write poetry and even whittle statues. The story of civilization is the story of what happened on the banks.

I believe in the power of music to heal, to inspire, and to bring people together.

The past is never dead. It's not even past.

Stay true to yourself and never let what somebody else says distract you from your goals.