The definition of a good mathematical problem is the mathematics it generates rather than the problem itself.

I can never be safe; I always try and go against the grain. As soon as I accomplish one thing, I just set a higher goal. That's how I've gotten to where I am.

It is not the task of history to judge, but to understand.

人心比万物都诡诈，坏到极处，谁能识透呢？

更好的论证只有在更强论证的力量是唯一发挥作用的力量时才能胜出。