永远不要低估一个执行到位的简单想法的力量。
Never underestimate the power of a simple idea executed well.
I think people believe in heaven because they don’t like the idea of dying, because they want to carry on living and they don’t like the idea that other people will move into their house and put their things into the rubbish.
采矿效率不仅仅是速度;而是用更少的浪费做更多的事。