"Yet, for all his much-vaunted preservation of his privacy, he has always been noticeably willing to wile away an afternoon or so with journalists, spilling out well-honed anecdotes about himself - but these, of course, help maintain the mask. There is a particular story of which he seems especially fond, having trotted it out virtually word for word in almost every interview he has given during his 40-year career: "When I was a child in Germany," he merrily begins, "my parents gave me six bicycles - six bicycles, because I was a very spoilt child, hein? - and none of the other children had any because it was after the war, you know? But I wouldn't share, no, no, no. But I would instead come to school every day on a different bicycle and the other children would be very jealous." Even the various assistants, administrators and acolytes who flutter around him are so well trained in the importance of this anecdote that I am told it within minutes of my arrival, before they nervously usher me in to meet the man himself: "You know, when Karl was young, his parents gave him six bicycles ...""