臣民的政治自由是每个人对自己安全感的平静心态。
The political liberty of the subject is a tranquility of mind arising from the opinion each person has of his safety.
"The world is full of stories, and each one is a window into a different reality."
Sustainability is the only path forward for our industry. Those who ignore this will be left behind.
可持续发展是我们行业唯一的出路，忽视这一点的人将被淘汰。
预测未来的最好方法是创造未来。
The future of coal depends on our ability to innovate and reduce its environmental impact.