We will not achieve the understanding we need, however, unless we are willing to think clearly about our problems and to follow those thoughts wherever they lead. Some people say that our economic problems are structural, with no quick cure available; but I believe that the only important structural obstacles to world prosperity are the obsolete doctrines that clutter the minds of men.

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Quote text and notes from Wikiquote: Paul Krugman (page history), available under CC BY-SA 4.0. Source quality and labels are our own summary of what Wikiquote records.