Dr Heinrich Schulte is apologetic about not recollecting our last meeting. That’s okay: it was 25 years ago. His two sons, Christoph and Johann, were only seven and nine at the time, but even then he had talked about succession plans.

“I’ve managed to keep ahead of the times; only hope they can,” he said in the winter of 1992.

A quarter of a century later, and we have a lot of catching up to do, but the 82-year-old Schulte is momentarily lost for words when asked why he carries on.