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每个人都是一个月亮,总有一个阴暗面,而他从来不会让人看见。
Every one is a moon and has a dark side which he never shows to anybody.
You have to spend some energy and effort to see the beauty of math.
常识告诉我们,业绩来来去去,但成本永远存在。
文字的力量在于它们能够将我们与自己最深处的部分连接起来。
The only limits that exist are the ones you place on yourself.