Even with only one goal and with only one instrument, in theory Central Bank actions can be organized in different ways. For a long time in the past, monetary policy was conducted through the control of monetary aggregates. This practice, however, proved to be increasingly inefficient as economic systems designed new substitutive mechanisms to create money that had not been supplied by the monetary authority. With advances in information technology and its effects on the productive processes of commercialization and of consumption, this element of endogenous money creation made control of money ineffective, which in turn led Central Bankers to abandon the use of targets for monetary aggregates. It is important to highlight that this does not mean that the evolution of the monetary aggregates will be watched or treated carelessly. They are still closely monitored, but they have ceased to be the policy variable. Another choice available to the Central Bank is to conduct monetary policy through the control of the exchange rate, which implies that the focus of the monetary authority is aimed at managing the exchange rate's trajectory. This option has been also abandoned due to its high costs and to its limited effectiveness when the economy goes through significant changes and shocks. The option that has proven to be most efficient to conduct monetary policy is the inflation targeting regime. This system has explicit targets for the monetary authority, which brings transparency to the targets being pursued and allows for reporting to society the absolute commitment to the control of inflation.
In accordance with the goal of stability and its role as guardian of the currency, the CB has as a permanent objective the maintenance of a sound financial system. The quest for excellence in supervisory standards, in line with the best international practices, is a permanent challenge for the CB. In this respect, it is important that the modernization process be sped up in the supervision and regulation areas, with the aim of solidifying the Country’s position in risk management and the  prevention of banking crises. There are many examples of severe financial system crises in emerging countries which led to significant losses of income and production, with disastrous impacts on society. Brazil may face challenges but will work to avoid crises. Banking supervision and the set of prudential rules play a major role in this process. In the short run, important challenges include the improvement of methods to evaluate the quality of financial system information, and the implementation of the new Credit Risk Center, which aims at enhancing the effectiveness of off-site supervision. In the long run, we will seek to enhance supervisory transparency and the implementation of the new Basel capital accord, without forgetting the issues related to supervisory autonomy and legal protection for supervisors. I am committed to maintaining rigorous supervision procedures, because this is the only way to assure the stability of the system. But it is also important for inspections to have a beginning, a development and an end.