聰明人向所有的事和人學習；普通人從自己的經驗中學習；而愚蠢的人卻自以為早已掌握了一切的答案
Smart people learn from everything and everyone, average people from their experiences, stupid people already have all the answers.
Smart people learn from everything and everyone, average people from their experiences, stupid people already have all the answers.
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