"There is a rumour going around that I have found God. I think this is unlikely because I have enough difficulty finding my keys, and there is empirical evidence that they exist. But it is true that in an interview I gave recently I did describe a sudden, distinct feeling I had one hectic day that everything I was doing was right and things were happening as they should. It seemed like the memory of a voice and it came wrapped in its own brief little bubble of tranquillity. I'm not used to this. As a fantasy writer I create fresh gods and philosophies almost with every new book ... But since contracting Alzheimer's disease I have spent my long winter walks trying to work out what it is that I really, if anything, believe."