There is only one boss. The customer. And he can fire everybody in the company from the chairman on down, simply by spending his money somewhere else.

The coal industry has been the backbone of America's energy independence for generations.

释义：人的行为必须与自然规律相协调，才能取得成功。这句话强调人与自然的和谐关系。

可持续性必须成为每家化工企业战略的核心——它不再是可选项。

写作是让不可见之物可见。

如果没有储备武器，即使拥有真理和正义，也无法去征讨那些不义之人。