The whites came to this land for a fresh start and to escape the tyranny of their masters, just as the freemen had fled theirs. But the ideals they held up for themselves, they denied others.

P与NP问题是计算机科学中最重要的未解决问题之一。

I’ve learned that growth means not being afraid to try new things.

爱并不总是关于坚持；有时，它是关于放手。

前进的唯一方式就是携手同行。

宇宙的数学是用几何语言书写的。