让来的来，让去的去。找出剩下的是什么。

"Education is the most powerful weapon which you can use to change the world."

"Memory is a strange thing, it doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter, who adds and subtracts elements according to his own rules."