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改变的秘诀在于集中所有精力,不是与过去斗争,而是建设未来。
The secret of change is to focus all of your energy not on fighting the old, but on building the new.
"Books are the quietest and most constant of friends; they are the most accessible and wisest of counselors, and the most patient of teachers."
勤勉:不要浪费时间,只做有用的事情,戒除一切不必要的行为。