世界是一个舞台，每个人都是演员。

用右手画圆形，左手画方形，不能同时画成

"The only way to do great work is to love what you do."

Innovation requires breaking conventional thinking.

But not all dark places need light， I have to remember that.

The fountain of content must spring up in the mind, and they who have so little knowledge of human nature as to seek happiness by changing anything but their own dispositions will waste their lives in fruitless efforts.