要理解心灵，就跟随它的实际后果。

采矿技术的创新不是为了取代人，而是为了让他们能够更好、更安全地完成工作。

Remembering that you are going to die is the best way I know to avoid the trap of thinking you have something to lose.

最具可持续性的矿山是那些超越开采思维的矿山。