我们开采的每一吨煤炭都承载着对工人、社区和地球的责任。

物理学中的每一个发现都打开了一扇通往新奥秘的门。

我们行业的未来取决于经济增长与环境责任的平衡。

The greatest wisdom is to know that you know nothing.

True leaders are always alone.

The more we realize our minuteness and our impotence in the face of cosmic forces, the more astonishing becomes what human beings have achieved.

法律与道德之间没有必然的联系。

The only service a friend can really render is to keep up your courage by holding up to you a mirror in which you can see a noble image of yourself.

空容器发出的声音最大。

The most important thing is to keep moving forward.