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To do mathematics is to explore an infinite landscape of ideas.
The only thing we have to fear is fear itself.
We are never the same with others as when we are alone. We are different, even when we are in the dark.
A well-designed deposit insurance system can prevent bank runs without creating excessive moral hazard.
语出(南宋)崔敦礼《刍言》。自以为聪明的人,其实并不聪明;自以为能干的人,其实并不能干。