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Life is too short to be anything but happy.
选择很简单:要么我们现在保护自然,要么我们以后付出代价。
突破功名利禄的束缚,突破世俗学问如考据、诗词的束缚。
数字是形式和思想的统治者。
In mathematics, the art of proposing a question must be held of higher value than solving it.