You can't let a candidate run for too long. He will be dragged along, cut apart, put back together and ripped to shreds again - from both the political opponents and the media.

If I had political responsibility, I would want to prepare for a plan B that would foresee that the European currency union, that the eurozone, no longer necessarily consists of 17 member states. And that means to make provisions so that other countries are not pulled into the maelstrom through contagion.

If things sometimes get tough, you can't ask yourself what impact it's having on you. It isn't an option.

There are still deep-seated structural problems that threaten the economic balance in the world: Between the United States and China, for example, but also within Europe. We have taken a few steps toward taming the financial markets, but we haven't come nearly far enough to rule out a repetition of the crisis.

Greece will not manage to get back on its feet without restructuring its debt. There is no way around it. The country's creditors will have to reduce a portion of its debts by extending maturity dates, lowering interest rates or giving them what's called a 'haircut' in financial jargon.

I would happily help to turn the stone being thrown at me into a boomerang.

The U.S. will lose its status as the superpower of the world financial system. The world will become multi-polar.