Every ton of coal we extract must create maximum value with minimum environmental impact.

Leadership is about inspiring people to do things they never thought they could.

The greatest works of literature are those that combine beauty with utility.

真正的幸福来自于与他人分享你的天赋。

一个公司的真正价值是通过它对人类和地球的影响来衡量的。

我不考虑我的声音。我只是唱歌。