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There are things which seem incredible to most men who have not studied Mathematics.
对于那些没有研究过数学的人来说,有些事情似乎是难以置信的。
It is not because certain things are difficult that we do not dare;it is because we do not dare that things are difficult.
语言中最危险的短语是:“我们一直都是这么做的。”
家庭和睦是人生最快乐的事。
Writing is a way of bearing witness.
真実は、常に残酷である。