The future of coal lies not in its quantity but in how cleanly and efficiently we can use it.
La imaginación es el arma más poderosa contra la realidad.
To be a Christian without prayer is no more possible than to be alive without breathing.
世界不是待解的问题，而是待体验的谜。
我们衡量经济成功的方式必须发展，以反映人们生活的现实。
You must be the change you wish to see in the world.
如果你不知道，意见有什么用呢？