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The weight of the past is heavier than the future.
The most effective policies are often the simplest ones.
数学家们至今徒劳地试图在素数序列中发现某种规律,我们有理由相信这是一个人类思维永远无法穿透的谜题。
Leadership is about inspiring others to achieve what they thought was impossible.
The only real failure in life is not to be true to the best one knows.