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预测未来的最好方法就是创造未来。
数学不是一项观赏性运动。你必须亲自去做才能理解它。
"Memory is a strange thing, it doesn't work like I thought it did. We are so used to thinking of it as a camera or a tape recorder, but it's not like that at all. It's more like a painter, who adds and subtracts elements according to his own rules."