数学家的工作永无止境;总有更多的问题需要解决。
A mathematician's work is never done; there are always more problems to solve.
"I keep on saying that anything is possible."
天下的道理,归根结底只有一个。
我不考虑年龄。我考虑的是精神。
生存还是毁灭。这其实不是一个问题。