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The essence of mathematics lies in its freedom.
I love to compete. That's what I do. That's why I work so hard at it.
The only lies for which we are truly punished are those we tell ourselves.
Writing is a way of bearing witness.
生活就像一面镜子,你朝它皱眉,它也朝你皱眉;你微笑,它也报以微笑。