我想一整天都做自己喜欢的事情，我想坐在路边的咖啡馆，看商店橱窗里的东西。在雨中漫步，做一些好玩甚至有些刺激的事。
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
In the age of big data, the mathematical principles of data structures and algorithms have become more critical than ever.
The task of the modern educator is not to cut down jungles, but to irrigate deserts.