A Swiss memoirist visiting Austria was “horrified to see numbers on the houses which appear to us a symbol of the hand of the ruler determinedly taking possession of the private individual.” To explain it to me, Anton Tantner goofily thumped his chest. “I am not a number, I am a free man,” he cried, quoting the British spy show The Prisoner. He paused. “This is also a song by Iron Maiden.”

