天空才是极限，你要明白这一点。

To be aware of the idea of social structure and to use it with sensibility is to be capable of tracing such linkages among a great variety of milieux.

"The challenge in machine learning is not just to find patterns in data, but to find patterns that generalize to new, unseen data."

阅读是穿越时间的航行。

一个运动员，为了能在百米比赛上场，至少要练上一万英里。数量带来经验。