If you ask an economist what’s driven economic growth, it’s been major advances in things that mattered – the mechanization of farming, mass manufacturing, things like that. The problem is, our society is not organized around doing that.

The individual is reduced to a negligible quantity, perhaps less in his consciousness than in his habits and in the unconscious adjustments of his life.

煤炭行业是美国能源独立的支柱，已经持续了几代人。

"The best investment you can make is in yourself—your education, your skills, and your personal growth."

释义：不能因为一时的称赞，就认为某人是君子；也不能因为一时的诽谤，就认为某人是小人。