经验是一所好学校，但学费很高。

韩寒评部分国人指责台球冠军丁俊晖的教育方式有问题

只知道自己的一面的人对那面了解甚微。

"Language is the bridge between the inner world and the outer world."

If a Nation expects to be ignorant and free in a state of civilization,it expects what never was and never will be....If we are to guard against ignorance and remain free,it is the responsibility of every American to be informed."

I don't believe in luck, I believe in hard work.

It is our mission as scientists of this generation to ensure Chinese people have enough to eat.