This book tries to give explanations on the liberal system of any developed country, from money roles, making its power, with its positive and negative effects. In an allegory of play, 4 characters play an important role: the State, entrepreneurship, Finance, population. It staged a 5 th actor, money, which plays the role of an agent double since the currency was invented. In this play created by man for thousands of years directors have often given way to improvisation. They deal with the consequences because that social policies, of the monetarist system. More or less harmful consequences depending on how to control the liberal economy