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。
The true investor scarcely ever is forced to sell his shares, and at all other times he is free to disregard the current price quotation.
I insist on my music, I love my music, because I'm Jay Chou.
The pursuit of knowledge is more valuable than the knowledge itself.