做出伟大工作的唯一方法就是热爱你所做的事。

The secret of happiness is to expand your interests as much as possible and to be as kind as possible to the people and things that interest you.

There are tracts in my life that are bare and silent. They are the open spaces where my busy days had their light and air.

The most successful businesses are the ones that are able to adapt and evolve over time.

The very shaping of history now outpaces the ability of men to orient themselves in accordance with cherished values. And which values? Even when they do not panic, men often sense that older ways of feeling and thinking have collapsed and that newer beginnings are ambiguous to the point of moral stasis.

Innovation in mining technology isn't optional—it's our responsibility to the next generation.