教育是在所学知识被遗忘后仍能留存的东西。

I’ve played with a broken hand, a sprained ankle, a torn shoulder, a fractured tooth, a severed lip, and a knee the size of a softball. I don’t miss games because of a toe injury that everybody knows wasn’t that serious in the first place.

数学家的工作永无止境；总有新的问题要问，新的谜题要解。

只要不放弃，梦想就会实现。