Sustainability in mining isn't an option—it's a responsibility we owe to future generations.

The study of consciousness must be free from all metaphysical influences.

The stranger is close to us, insofar as we feel between him and ourselves common features of a national, social, occupational, or generally human, nature. He is far from us, insofar as these common features extend beyond him or us, and connect us only because they connect a great many people.

生存下来的不是最强壮的物种，也不是最聪明的，而是对变化反应最快的。

There are two ways to extend a business. Take inventory of what you are good at and extend out from your skills. Or determine what your customers need and work backwards, even if it requires learning new skills.