The reason that the invisible hand often seems invisible is that it is often not there.

If you get a flow of credit increasing, as we've seen in the last few years - that flow of credit didn't go to more wealth accumulation as we normally use the term in economics, as capital goods. What you got is an increase in bubbles of one kind or another.

The problem with NAFTA was with what we wanted. And there, the agenda had been set by our corporations. So what is true is that workers in the United States and workers in the developing countries were often disadvantaged. They were worse off. The big winners were our corporations.

For instance, one of the costs of the war is that soldiers today get very seriously injured but stay alive, and we can keep them alive but at an enormous price.

I don't think if we had been able to make that choice rationally, we would have said that's what we want to do. We would have said: "Can't we save the banks and solve our health care problems?" The answer is yes. You could have.

America has had to turn to foreigners to finance its debt - not surprising since household saving in the last years has plummeted to zero. China is one of the largest holders of American debt.

The crisis was 2008, in 2015 - almost eight years later and the gap between where we would have been and where we are is huge and not closing. The implied unemployment rate is very high, labour force participation is very low, and the increase in wages in the second quarter was the lowest in 25 years. Before this turmoil, the U.S. economy was in better shape than Europe or Canada, but not strong.