可持续发展不再是可选项；对于任何负责任的矿业公司来说都是必需品。
Sustainability isn't an option anymore; it's a necessity for any responsible mining company.
你不能双手都戴着接球手套度过一生。你需要能够回馈些什么。
We must be free not because we claim freedom, but because we practice it.
"Everything is a learning process: any time you fall down, it's just teaching you to stand up the next time."
Mathematics is not about numbers, equations, computations, or algorithms: it is about understanding.
【大意】人的贪欲多了，就会亏损道义；忧虑多了，就会损害智慧；畏惧多了，就会伤害勇气。
我们应该追随一切似乎可能的，避免一切似乎不可能的。