笑，全世界便与你同声笑，哭，你便独自哭。
Laugh, and the world laughs with you; weep, and you weep alone.
知识就是力量。
The beauty of mathematics is that it is both an art and a science.
"Silence is the perfectest herald of joy: I were but little happy, if I could say how much."
Don't ever let somebody tell you you can't do something, not even me.
It is absurd to say that we have a duty to be benefited.