Paul Volcker death has given the opportunity to recall his essential role, since he was appointed at the presidency of the American central bank. He will be at the origin of the predominant role given to central banks in the U.S. as in Europe and in Japan, notably regarding the fight against inflation. This role is not without making us reminding that one the British economist, John Maynard Keynes, plaid, at the beginning of the Thirties to get the world out from the terrible crisis which affected it in 1929. He made accepted that the market was not able ...