人声是最美的乐器，也是最难演奏的乐器。

投资于人才是公司能做的最佳投资。

Success is a function of persistence and doggedness and the willingness to work hard for twenty-two minutes to make sense of something that most people would give up on after thirty seconds.

煤炭开采是地球与人类智慧的合作伙伴关系。