数学家是能在定理间找到类比的人；更好的数学家能在理论间看到类比；而最优秀的数学家能注意到类比之间的类比。
I don't rap for the sake of rapping. I rap to make people think.
足球的进步不仅取决于球员的技术，还取决于比赛进行的智慧和公平性。
I went to the woods because I wanted to live deliberately. I wanted to live deep and suck out all the marrow of life. To put to rout all that was not life. And not, when I had come to die, discover that I had not lived.
