煤矿工人是美国工业实力的无名英雄。

The joy of mathematics is in the struggle to understand.

I don’t sleep because I’m too busy dreaming.

The difference between good and great is the extra effort.

I'm not a businessman, I'm a business, man.

Education does not take root in the soul unless it goes deep.

Our industry must be part of the solution to climate change. We have the skills, the technologies and the responsibility to act.