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The beauty of mathematics lies not in its complexity but in its simplicity and the way it reveals hidden truths.
译文:厚道的人不去做损害、诋毁别人的事来使自己得益,仁义的人不危害别人而为自己求取名誉。
The writer is either a practicing recluse or a delinquent, guilt-ridden one.
解析:通过实践磨练自己。