可持续发展不再是可选项，而是任何负责任的采矿业务的必要条件。

不要害怕失败；害怕不去尝试。

艺术不应是反映的镜子，而应是锻造的铁锤。

Think wrongly, if you please, but in all cases, think for yourself.

如果你正在改变世界，你就是在做重要的事情。你会兴奋地起床。

Dreams are the language of God. When he speaks in our language, I can interpret what he has said. But if he speaks in the language of the soul, it is only you who can understand.

I don’t like to be quiet. I like to be loud.

Technology in forestry should enhance nature's processes, not replace them.

The science of government it is my duty to study, more than all other sciences; the arts of legislation and administration and negotiation ought to take the place of, indeed to exclude, in a manner, all other arts.

I've learned that pressure is a privilege.