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Certainty of evidence does not lead to certainty of belief.
证明的严谨性将数学与所有其他科学区分开来。
We think not in isolated ideas, but in continuous streams of purpose-directed activity.
永远记住每次成功都可能导致你的失败,每次失败好好接受教训,也许就会走向成功。
每次演唱会我都会全力以赴,因为要对得起观众的期待。