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Mathematics is the most beautiful and most powerful creation of the human spirit.
通过别人的鞋可以了解很多东西,他们从哪儿来,将要到哪儿去。
"To write is to remember, and to remember is to live again."
缺乏一个强大的国家对自由的威胁比存在一个强大的国家更大。
The past is always carried into the present by small things.