It is not enough that we do our best; sometimes we must do what is required.
仅仅做到我们的最好是不够的,有时候我们得达到要求。
最好的书是那些让你读完时与开始时略有不同的书。
A miner's safety should never be measured in cost-benefit analyses.
Sustainability isn’t an option—it’s the future of our business.
Celebrate your successes. Find some humor in your failures.