Of all the marvels of Oxford, Babel seemed the most impossible – a tower out of time, a vision from a dream. Those stained-glass windows, that high, imposing dome; it all seemed to have been pulled straight from the painting in Professor Lovell’s dining room and dropped whole onto this drab grey street. An illumination in a medieval manuscript; a door to a fairy land. It seemed impossible that they should come here every day to study, that they had the right to enter at all. Yet here it stood, right in front of them, waiting.