The only way to learn mathematics is to do mathematics.

你不能戴着丝绒手套搞革命。

The most important part of teaching is to teach what it is to know.

Win-win cooperation is the main theme of mining development in the new era.

我角色的眼睛是最重要的部分，它们承载着情感。

Every chemical process we develop must pass three tests: Is it safe? Is it sustainable? Is it scalable?