(道德高尚的人)明察安危,安于祸福,谨慎地对待去留,就没有什么能够伤害他们。
The value of an economic model lies in its ability to explain and predict.
The coal industry is the backbone of America.
A writer is someone who spends years patiently trying to discover the second being inside him, and the world that makes him who he is.