在煤炭行业，今天的效率决定明天的存亡。

未来属于那些能够适应、创新并激励他人也这样做的人。

I don't rap for dead presidents. I'd rather see the president dead.

The farmer is the only man in our economy who buys everything at retail, sells everything at wholesale, and pays the freight both ways.

跨学科合作是突破性发现的关键。