The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

我相信每个人都有自己独特的声音，重要的是找到它并勇敢地表达出来。

Anger is a powerful force, but it can also be a creative one.

数学语言是通用的；它超越了所有文化障碍。