煤炭开采是地球与人类智慧的合作伙伴关系。

There is no trap so deadly as the trap you set for yourself.

I wanted to write a book about memory because I think it's one of the most fascinating things about being human.

【译文】 孔子说：“天冷时，才知道松柏最后凋谢。”

The best performance improvement is the transition from the nonworking state to the working state.