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the study of history aims above all to make us aware of possibilities we don’t normally consider
Historians study the past not in order to repeat it, but in order to be liberated from it.
Studying history will not tell us what to choose, but at least it gives us more options
Movements seeking to change the world often begin by rewriting history, thereby enabling people to reimagine the future 
重新解释历史， 展望新的未来。视野如果被局限了，就无法想象另一种可能。