The secret of change is to focus all of your energy, not on fighting the old, but on building the new.

If you’re not willing to be unpopular for being right, then you don’t deserve to be right.

当你觉得需要严格管理某人时，你就犯了一个招聘错误。

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

The best buildings come from a strong concept.