数学家是将咖啡转化为定理的装置。
A mathematician is a device for turning coffee into theorems.
The only thing that is constant is change.
"The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion."
I'm not a feminist, but I don't like girls pretending to be stupid.
成功不是终点,失败也不是致命的,重要的是继续前进的勇气。