没有人值得你流泪，值得让你这么做的人不会让你哭泣。
最终，我们记住的不是敌人的话语，而是朋友的沉默。
The test of a first-rate intelligence is the ability to hold two opposed ideas in the mind at the same time, and still retain the ability to function.
Innovation is the backbone of modern mining—without it, we're just digging holes in the ground.
