To gain admission was in itself, as I found, a ceremony of induction. On my first day, armed with a letter from the University of London certifying that I was a bona fide candidate for a doctorate, I was directed to a pair of huge wing doors, higher than any doors I had ever seen or indeed doors need to be. Beyond them I came upon a tall counter in elaborately carved wood. An official behind the counter, and from a considerable height, looked at me through small, steel-framed National Health glasses. To achieve that impression of superiority, he must have been sitting on a platform a foot or two above the floor.