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The most beautiful people we have known are those who have known defeat, known suffering, known struggle, known loss, and have found their way out of the depths.
黑色是光的颜色,不是黑暗的颜色。
The conjectures of the Langlands program are a challenge to the next generation of mathematicians.
I’m not perfect but I’m trying my best every day.
玩耍是童年的语言,书籍也应该用这种语言表达。