但深思熟虑的概括和深刻的比较可以证明对国家之间的了解、对我们过去做过什么、现在正在做什么以即将来要做什么具有重要的意义。
But thoughtful generalizations and insightful comparisons can indeed prove critical to understanding nations, where we've been, where we are and where we might be headed.
如果我们在过去和现在之间争吵不休，我们将会发现我们已经失去未来。
If we open a quarrel between the past and the present, we shall find we have lost the future.
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