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衡量一个人的真正标准是他如何对待那些对他毫无益处的人。
The true measure of a man is how he treats someone who can do him absolutely no good.
The only way to make sense out of change is to plunge into it, move with it, and join the dance.
"The most important thing in empirical work is to be clear about the question you are trying to answer."