No man really knows about other human beings. The best he can do is to suppose that they are like himself.

煤炭仍将是能源结构的一部分，但它必须更清洁、更负责任。

Foreign powers do not seem to appreciate the true character of our Government.

可持续性不是一种选择——它是任何希望在未来蓬勃发展的行业的唯一前进道路。

改变是不可避免的，但成长是可选的。