恐惧是大多数政府的基础。

程序测试可以用来显示错误的存在，但绝不能显示它们的不存在！

Sustainability is not an option; it's a necessity for the future of mining.

In the end, we will remember not the words of our enemies, but the silence of our friends.

Sustainability isn't an option; it's a responsibility we all share.