最终，我们将记住的不是敌人的话语，而是朋友的沉默。
一个社会离真相越远，它就越会憎恨那些说出真相的人。
Leadership in the coal industry today means navigating the delicate balance between economic necessity and environmental responsibility.
When [competitors are] in the shower in the morning, they're thinking about how they're going to get ahead of one of their top competitors. Here in the shower, we're thinking about how we are going to invent something on behalf of a customer.