数学中最令人兴奋的时刻是当你发现一些隐藏在显而易见之处的东西。
The only thing I know is that I don't know anything.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
Every man is born as many men and dies as a single one.
改变是不可避免的，成长却是可以选择的。