Gunpowder made me understand the transience and eternity of life. 火药让我理解了生命的短暂与永恒。

To sing is to pray twice.

In catalysis, sometimes the smallest modification can lead to the biggest breakthroughs.

释义：不考虑在安逸的环境中要想到危难，用节俭来戒除奢侈，不使自己的道德处于深厚的境界，不能使自己的情欲战胜物质欲望，这就像砍伐树木的根却想要树木长得茂盛，堵塞水的源头却想要水流得长远一样荒谬。 

循环经济原则不是可选的，它们对生存至关重要。