老时相信一切，中年怀疑一切，青年知道一切。
The old believe everything, the middle aged suspect everything, the young know everything.
Sustainability in mining isn't an option—it's a necessity for our future.
理解另一种文化的唯一方法是假设那种文化的参照框架。
I don't believe in poverty. I believe in creating opportunities.
海洋是一台巨大的机器，而风是它的发条。
人是存在的牧者。
富贵不能使我的思想迷乱，贫贱不能使我改变志向，威武不能使我节操屈服，这样的人才称得上大丈夫。
Laughter and tears are both responses to frustration and exhaustion. I myself prefer to laugh, since there is less cleaning up to do afterward.