The price of doing the same old thing is far higher than the price of change.
如果你不疯狂,你就不是真正的天才。
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
I am a bad feminist, but I am a feminist.
The only true thoughts are those which do not understand themselves.
数学是为数学家而写的。
It is not shame for a man to learn that which he knows not,whatever his age.