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数学不是一项观赏性运动。
真正的发现之旅不在于寻找新的风景,而在于拥有新的眼光。
Every portrait that is painted with feeling is a portrait of the artist, not of the sitter.
I don't think you can ever really know who you are until you're tested.
The most effective way to destroy people is to deny and obliterate their own understanding of their history.