The essence of creativity is figuring out how to use what you already know in order to go beyond what you already think.
The pursuit of mathematical truth is a pursuit of beauty, elegance, and simplicity.
在糟糕的时候抱有希望不仅仅是愚蠢的浪漫。这是基于人类历史不仅是残酷的历史,也是同情、牺牲、勇气和善良的历史。