采矿业必须在安全、可持续性和社会责任方面以身作则。

数学中的每个问题都是一个等待解决的谜题，而乐趣就在于解决的过程。

I want to be remembered as someone who was kind and made people happy.

Give every man thy ear, but few thy voice; take each man’s censure,but reserve thy judgment.

经验是我们给错误起的名字。

我对黑暗感兴趣。如果你不走进黑暗，你永远看不到光明。