看一个人的操守，在其利害得失时；看一个人的精力，在其饥饿疲倦时；看一个人的度量，在其面临喜怒哀乐时；看一个人的沉着，在其有惊吓时。
Just you wait. You really will go to hell.Don't be ridiculous. How can you go to hell if you're already there?
Museums should be forums, not temples.
"The best way to predict the future is to invent it."
In mathematics, the art of proposing a question must be held of higher value than solving it.