If I were writing a novel I would end it here: a novel, I used to think, has to end somewhere, but I'm beginning to believe my realism has been at fault all these years, for nothing in life now ever seems to end. Chemists tell you matter is never completely destroyed, and mathematicians tell you that if you halve each pace in crossing a room, you will never reach the opposite wall, so what an optimist I would be if I thought that this story ended here.

Graham Greene