诗歌是一种游戏，但一种严肃的游戏。

钢铁的未来在于回收和减少碳排放。

It is greed to do all the talking but not to want others to do the talking after one has listened.

"The truth is rarely pure and never simple."

A moment is a small piece of time, but it can be a very important piece of time.

可持续性不是一种选择，而是我们对后代的责任。