每个人都有不为世人所知的秘密悲伤；我们常常称一个人冷漠，其实他只是悲伤。

Every business decision we make in forestry must pass the test of time - will this still make sense in 100 years?

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。