Conservatives are necessary for maintaining things the way they are when everything is working and change might be dangerous. Liberals, by contrast, are necessary for changing things when they are no longer working. It is no easy task, however, to determine when something needs to be preserved or when it needs to be transformed. That is why we have politics, if we are fortunate, and the dialogue that accompanies it, instead of war, tyranny, or submission. It is necessary for us to argue vociferously and passionately about the relative value of stability versus change, so that we can determine
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