Although I have made a fortune in the financial markets, I now fear that the untrammeled intensification of laissez-faire capitalism and the spread of market values into all areas of life is endangering our open and democratic society. The main enemy of the open society, I believe, is no longer the communist but the capitalist threat.

We are the most powerful nation on earth. No external power, no terrorist organization can defeat us. But we can defeat ourselves by getting caught in a quagmire.

When it comes to social consequences, they've got all different people acting in different ways, very difficult to even have a proper criterion of success. So, it's a difficult task.

The generally accepted view is that markets are always right -- that is, market prices tend to discount future developments accurately even when it is unclear what those developments are. I start with the opposite view. I believe the market prices are always wrong in the sense that they present a biased view of the future.

Increase your bets when you are confident and scale down your positions when you don't have conviction.

In the case of a meltdown, the regulatory authorities may find themselves obliged to step in to preserve the integrity of the system. It is in that light that the authorities have both a right and an obligation to supervise and regulate derivative instruments.

Germans tend to forget now that the euro was largely a Franco-German creation. No country has benefited more from the euro than Germany, both politically and economically. Therefore what has happened as a result of the introduction of the euro is largely Germany's its responsibility.