To write is to breathe, to live, to exist.
写作就是呼吸，就是生活，就是存在。
I am not a hero of mathematics. I'm not even that successful; that is why I don't want to have everybody looking at me.
Reinforcement is the central factor in the acquisition of new behavior patterns.
The only way to get through life is to laugh your way through it. You either have to laugh or cry. I prefer to laugh. Crying gives me a headache.
我们为新南开所抱的志愿，不过是‘了解中国，服务中国’这两句话。
I'm not a past, I'm a future.