These public-private partnerships are very, very dangerous. The most rotten part of the financial system in the US consisted of the government sponsored entities, Fannie Mae and Freddie Mac. They really kicked off this crisis. The state should set the rules and enforce them - but not become involved as a market player.

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.

I would be lying, however, if I claimed that I could always formulate worthwhile hypotheses on the basis of my theoretical framework. Sometimes there were no reflexive processes to be found; sometimes I failed to find them; and, what was the most painful of all, sometimes I got them wrong. One way or another, I often invested without a worthwhile hypothesis and my activities were not very different from a random walk.

The lower interest rates fueled housing and consumption booms in countries such as Spain and Ireland. At the same time, Germany, struggling with the burdens of reunification, tightened its belt and became more competitive. All this led to a wide divergence in economic performance. Europe became divided into creditor and debtor countries.

Once we realize that imperfect understanding is the human condition there is no shame in being wrong, only in failing to correct our mistakes.

I admire Chancellor Merkel for her leadership qualities, but she is leading Europe in the wrong direction.

The main obstacle to a stable and just world order is the United States. [This idea] happens to coincide with the prevailing opinion in the world. And I think that's rather shocking for Americans to hear.