"In every equation, there is a story waiting to be told."

All the effects of Nature are only the mathematical consequences of a small number of immutable laws.

Every ton of ore we extract carries with it a responsibility to the future.

可持续发展需要在短期利润和长期价值创造之间取得平衡。

生活的目的不是快乐。它是有用的，是光荣的，是富有同情心的，是让你活得有意义，活得好。

Take long walks in stormy weather or through deep snows in the fields and woods, if you would keep your spirits up. Deal with brute nature. Be cold and hungry and weary.

今天种植的每一棵树都是对更绿色明天的投资。