法律规范的有效性不是基于其内容，而是基于颁布它的权威。

Behavior is not just a response to a stimulus, but is guided by expectations and purposes.

Leadership in the oil sector means balancing profitability with responsibility.

The only real peace is the peace of the heart.

"To be foreign is to be always slightly out of step."

安全和可持续性是现代采矿的基石。