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Banks are run by executives, and executives protect themselves, and that does not always mean that banks are going to behave rationally.

It is no wonder that bank capital is regulated. When borrowing and lending is profitable, it is tempting for banks to scale up their operations and to borrow and lend too much in relation to their capital, in effect reducing the effectiveness of the potential capital cushion.

It is probably the case that some regulation of financing will make crises less likely, and I would say higher capital requirements are an almost fail-safe way to make banks safer. But there are a lot of other things that may not be doing that, and so we need to be careful about sort of, like, rushing to one conclusion or another.

It's extremely important for our banks to have more capital, higher quality capital.

The financial system has to be regulated, we have to end with the tax havens, and it's necessary that the central banks in the world should control a little bit the banks' financing because they cannot bypass a certain range of leverage.

Banks are concerned the central bank is imposing too many regulations. If the trend continues, we'll swing to heavy regulation. We need to have balanced regulation to encourage the economy.

Banks are there to support businesses that have justifiable needs.

I think the market should reward banks that have been transparent in recognising their problems. I think the tendency of banks to hide the problem assets over a period of three or four years should not be allowed.

Forget about banks that are too big to fail; the focus should be on cities, municipalities and countries that are too big to fail.