Rather than attacking each other, Europeans should blame the "great Europeans" of the past. Men such as Mr Kohl and Mr Delors were truly "great" in other contexts. Mr Kohl drove through the unification of Germany. Mr Delors constructed the European single market. But when it came to the euro, they pursued their grand vision while ignoring the objections of those who questioned whether a single currency could work for such diverse economies. Today's Europe is living with the consequences of their hubris.