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To look at a thing is very different from seeing a thing. One does not see anything until one sees its beauty. Then and then only, does it come into existence.

數學家的工作永遠不會完成；總有新的問題需要探索，新的謎團需要揭開。

The past is never dead. It's not even past.

對往日良辰只付之一嘆，借紛繁景象把心事排除。