The coal industry must evolve or risk becoming obsolete. Adaptation is the key to survival.

The arithmetic of modular forms is a key to understanding the deeper mysteries of number theory.

今天我们种下的每一颗种子都是对后代的承诺。

每一次实验，即使失败，也会教会我们一些宝贵的东西。

Virtue is more to be feared than vice， because its excesses are not subject to the regulation of conscience.

如果你没有失败，说明你不够努力。

Innovation is not just about technology, but also about management and business models.