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The joy of discovery in mathematics is like solving a puzzle that the universe has left for us.
The only way to make sense out of change is to plunge into it, move with it, and join the dance.
在我们所知的宇宙中,存在巨大的不公正,善良的人经常受苦,邪恶的人经常繁荣,人们很难知道哪一个更令人恼火。