My day began with breakfast in the dining room of The Kilns with the sunlight streaming through the windows. I then walked into Central Oxford as C. S. Lewis did many times. As I saw a bus going up Headington Hill, I could not help but think of these lines from Surprised by Joy about a double-decker bus.... "I was going up Headington Hill on the top of a bus. Without words and (I think) almost without images, a fact about myself was somehow presented to me. I became aware that I was holding something at bay, or shutting something out. Or, if you like, that I was wearing some stiff clothing, like corsets, or even a suit of armour, as if I were a lobster. I felt myself being, there and then, given a free choice. I could open the door or keep it shut; I could unbuckle the armour or keep it on. Neither choice was presented as a duty; no threat or promise was attached to either, though I knew that to open the door or take off the corslet meant the incalculable. The choice appe...