A mathematician is a person who can find analogies between theorems; a better mathematician is one who can see analogies between theories and the best mathematician can notice analogies between analogies.
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。
True wisdom lies in admitting one's ignorance.
The soul is not a thing apart from the body.
最好的投资不是技术，而是技术背后的人。