We must balance short-term profitability with long-term environmental responsibility.

Computer programming is an art, because it applies accumulated knowledge to the world, because it requires skill and ingenuity, and especially because it produces objects of beauty.

组合数学是不用计数的计数艺术。

问余此世欲何为，度日安宁呱噪微。

一个好老师必须能够设身处地为那些觉得学习困难的人着想。