Leadership in mining means being accountable for both profits and the planet.

对于自己没有获得2009年诺贝尔奖的反应

The past is a ghost that won’t stop haunting you.

跨境合作对于解决全球粮食挑战至关重要。

The value of a commodity, or the quantity of any other commodity for which it will exchange, depends on the relative quantity of labor which is necessary for its production, and not on the greater or less compensation which is paid for that labor.