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一个人的价值，应该看他贡献什么，而不应当看他取得什么。科学是永无止境的，它是一个永恒之谜。科学研究能破除迷信，因为它鼓励人们根据因果关系来思考和观察事物。一个人在科学探索的道路上走过弯路、犯过错误并不是坏事，更不是什么耻辱，要在实践中勇于承认和改正错误。
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