The problem of the modern individual is not that he has too little choice, but that he has too much.
你女儿那么痴迷是因为我。
互联网最重要的一点是它是一个网络的网络。
A problem is in P if it can be solved quickly by a computer, and in NP if a solution can be verified quickly.
写作就是重写。
There is no perfection only life.