I was regarded around the EU as a rather eccentric figure, almost pitiable in being unable to see where the great sweep of history and prosperity was heading. One former senior colleague in Britain said I had become "more extreme even than Mrs Thatcher", as if this was an unimaginable horror. Idealistic heads in Brussels were shaken in sorrow that the dreaded Eurosceptics were not only growing in the Conservative Party but had now taken it over, with me having become, astonishingly, its leader.
There is no doubt that I was wrong about quite a few things when I was leading my party. But I hope the eurozone leaders meeting today will remember that those of us who criticised the euro at its creation were correct in our forecasts. Otherwise they risk adding to the monumental errors of judgment, analysis and leadership made by their predecessors in 1998.
Those who poured scorn on some of us who predicted "wage cuts, tax hikes, and the creation of vicious unemployment blackspots" – all now experienced in abundance by the people of Greece – should at least now make the effort to understand why these predictions were true.
Economics has few laws, which is why economic forecasts are so maddeningly unreliable. If it has one law, it is this: that if you fix together some things which naturally vary, such as interest rates and exchange rates, other things, such as unemployment and wages, will vary more instead. And in a single currency zone, which has exactly this effect, you can only get round these problems by paying big subsidies to poorly performing areas, and expecting workers to move in large numbers to better performing ones.
This is what happens in the United States, or indeed within the United Kingdom. In general it works. In the eurozone it does not work, because either Greeks have to cure their poor economic performance or Germans have to pay them big subsidies forever, and neither are willing or able to do so. This, in a sentence, is the problem of the eurozone, and continued denial of it will only make that problem worse.