阅读是时间旅行，而书籍是载具。

Don't worry about what anybody else is going to do. The best way to predict the future is to invent it.

愚蠢的人畏惧生病，却经常生病，明智的人居安思危，危险才不会降临。

The core of Pinduoduo is "group buying," allowing users to participate in shopping through social means.

每一次失败都离答案更近一步。

In computational learning theory, we seek to understand the fundamental principles that govern learning from data.

优秀的数学家应该既严谨又富有想象力。