Arthur Potts knew all about King's Thursday and Professor Silenus.
On the day of Paul's arrival in London he rang up his old friend and arranged to dine with him at the Queen's Restaurant in Sloane Square. It seemed quite natural that they should be again seated at the table where they had discussed so many subjects of public importance, Budgets and birth control and Byzantine mosaics. For the first tilne since the disturbing evening of the Bollinger dinner he felt at ease. Llanabba Castle, with its sham castellations and preposterous inhabitants, had sunk into the oblivion that waits upon even the most lurid of nightmares. Here were sweet corn and pimentoes, and white Burgundy, and the grave eyes of Arthur Potts, and there on the peg over his head hung the black hat he had bought in St James's that afternoon. For an evening at least the shadow that has flitted about this narrative under the name of Paul Pennyfeather materialized into the solid figure of an intelligent, well‑educated, well‑conducted young man, a man who could be trusted to use his vote at a general election with discretion and proper detachment, whose opinion on a ballet or a critical essay was rather better than most people's, who could order a dinner without embarrassment and in a creditable French accent, who could be trusted to see to luggage at foreign railway‑stations and might be expected to acquit himself with decision and decorum in all the emergencies of civilized life. This was the Paul Pennyfeather who had been developing in the placid years which preceded this story. In fact, the whole of this book is really an account of the mysterious disappearance of Paul Pennyfeather, so that readers must not complain if the shadow which took his name does not amply fill the important part of hero for which he was originally cast.
'I saw some of Otto Silenus's work at Munich, said Potts. 'I think that he's a man worth watching. He was in Moscow at one time and in the Bauhaus at Dessau. He can't be more than twenty‑five now. There were some photographs of King's Thursday in a paper the other day. It looked extraordinarily interesting. It's said to be the only really imaginative building since the French Revolution. He's got right away from Corbusier, anyway.
'If people realized, said Paul, 'Corbusier is a pure nineteenth‑century, Manchester school utilitarian, and that's why they like him.
Then Paul told Potts about the death of Grimes and the doubts of Mr Prendergast, and Potts told Paul about rather an interesting job he had got under the League of Nations and how he had decided not to take his Schools in consequence and of the unenlightened attitude adopted in the matter by Potts's father.
For an evening Paul became a real person again, but next day he woke up leaving himself disembodied somewhere between Sloane Square and Onslow Square. He had to meet Beste‑Chetwynde and catch a morning train to King's Thursday, and there his extraordinary adventures began anew. From the point of view of this story Paul's second disappearance is necessary, because, as the reader will probably have discerned already, Paul Pennyfeather would never have made a hero, and the only interest about him arises from the unusual series of events of which his shadow was witness.