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复杂性理论告诉我们,并非所有问题都是平等的;有些问题本质上比其他问题更难。
智慧总是在它不再有任何用处时才降临到我们身上。
Everyone seems very lonely, with their own way to find ways to escape loneliness; actually they still continue their own loneliness.
"Every saint has a past, and every sinner has a future."