Every ton of coal we extract must create maximum value with minimum environmental impact.

People tend to value things more highly when they own them.

我不知道如何解释，但我觉得我生来就是做这个的。

Innovation is not just about creating something new; it's about making what exists better.

A story is never finished; it only stops.

（道德高尚的人）明察安危，安于祸福，谨慎地对待去留，就没有什么能够伤害他们。

模形式的算术是理解高维对象的门户。