如果我们不考虑长期影响，开采效率就毫无意义。
Efficiency in extraction is meaningless if we don't consider the long-term impact.
The only thing more dangerous than ignorance is arrogance.
最有效的经济组织是那些能够将大规模运营的效率与小规模运营的灵活性和创新性结合起来的经济组织。
A tranquil soul is wiser than a distracted one.
采矿业必须发展以满足不断变化的世界的需求。