Theo Waigel, Germany's finance minister at the time when the European currency was about to be launched, had no doubt about the euro's Germanic lineage. At a bitter-sweet commemoration of the German mark's 50th anniversary – and its impending demise – in 1998 he proclaimed to his doubtful compatriots that "Der Euro spricht deutsch" (the euro speaks German).

That's what it took to convince Germans to part with their trusted and beloved mark, and to relegate their revered monetary authority (Bundesbank) to the regional office of the European Central Bank (ECB). But Waigel and his boss, the former Chancellor Helmut Kohl, took no chances. Doubting that they would have the votes to win a referendum, they pushed the introduction of the euro without consulting public opinion.