Technological innovation in mining isn't about replacing people, but about making their jobs safer and more productive.
真正的快乐来自于做自己喜欢的事。
喜剧的关键是时机,而时机的关键是耐心。
Silence is a language that can be learned.
 人类的理解一旦采纳了一个观点,就会倾向于将其他事物引向支持和一致。