煤炭推动了我们的过去，但我们必须诚实地面对它在未来中的作用。
I don’t fear losing. I fear not giving my best.
The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.
The improvement of understanding is for two ends: first, our own increase of knowledge; secondly, to enable us to deliver that knowledge to others.
The poet is a man who can find beauty in the ugliest of things.
可持续性不是一种趋势，而是我们对后代的责任。