The question is not whether the thing exists， but whether it has any essence which is capable of existence without us.

可持续性不是选择，而是矿业未来的必然要求。

When public speaking， pause frequently. Pause before you say something in a new way， pause after you have said something you believe is important， and pause as a relief to let listeners absorb details.

Innovation is not just about technology; it's about changing mindsets and embracing new ways of thinking.

艺术的真正用途是让不可见的东西变得可见。

The beauty of topological insulators lies in their robustness; their surface states are protected against disorder and imperfections.

注释：避免嫌疑和被人猜疑，这样才能不犯错误。广泛学习并恳切求教，才能增长知识。行为高尚而言辞谦逊，这样才能修养身心。