"Free markets" is a very general term. There are all sorts of problems that will emerge. Free markets work best when the transaction between two individuals affects only those individuals. Most often, a transaction between you and me affects a third party. That is the source of all problems for government. That is the source of all pollution problems, of the inequality problem. This reality ensures that the end of history will never come.
Milton FriedmanEducation spending will be most effective if it relies on parental choice & private initiative -- the building blocks of success throughout our society.
Milton FriedmanThe Great Depression was not a sign of the failure of monetary policy or a result of the failure of the market system as was widely interpreted. It was instead a consequence of a very serious government failure, in particular a failure in the monetary authorities to do what they'd initially been set up to do.
Milton FriedmanWhen you have a time of crisis what happens depends on what ideas are floating around, and what ideas have been developed, and thought through, and are made effective.
Milton Friedman