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The greatest threat to democracy is not from external enemies but from internal decay and the loss of civic virtue.
对民主的最大威胁不是来自外部敌人,而是来自内部腐败和公民美德的丧失。
书本身不是目的,它是一种唤起的手段。
The future of coal lies not in its quantity but in how cleanly and efficiently we can use it.
If you fulfill your obligations everyday you don't need to worry about the future.
最简单而高贵的方式不是压榨别人,而是提高你自己。