计算复杂性的概念不仅仅是我们能计算多快，还包括理解什么是可以计算的极限。
The difference between good and great lies in the details.
The city's cold and empty, no one's around to judge me.
The only way to do great work is to love what you do.
尘土承受屈辱，却以鲜花来回报。
理解一个句子意味着理解一种语言。
I don't have to prove anything to anyone. There's nothing to prove.
知足是天然的财富，奢侈是人为的贫困。