I have to be alone very often. I’d be quite happy if I spent from Saturday night until Monday morning alone in my apartment. That’s how I refuel.

A business that makes nothing but money is a poor business.

最好的科学往往来自意想不到的地方。

The future is not a gift. It is an achievement.

衡量一家矿业公司的真正标准不是它的股价，而是它的管理责任。