“I remember once when he and I arrived at a country house where the going threatened to be sticky, Jeeves, as we alighted, murmured in my ear the words 'Childe Roland to the Dark Tower came, sir', and at the time I could make nothing of the crack. Subsequent inquiry, however, revealed that this Roland was one of those knights of the Middle Ages who spent their time wandering to and fro, and that on fetching up one evening at a dump known as the Dark Tower he had scratched the chin a bit dubiously, not liking the look of things.”