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故事不仅仅是为了睡前。它们是为了任何时候你需要逃避、梦想、笑或哭。
To be without some of the things you want is an indispensable part of happiness.
Mathematics is not a spectator sport. You have to do it to understand it.
高利润并不必然需要艰苦的工作、低工资和恶劣的条件。