The thing is that what ageing does is it makes it harder and harder for you to stay fit. That's why it's a dirty trick. I try very hard but if I try too hard, I injure myself. So you have to show some wisdom about keeping fit. I mean, I try, I ride my bicycle in the summer, I try to walk in the winter and so on but, you know, ageing's out to get you and it will. I said to a doctor I go to, a cardiologist. I said, 'Ageing's a linear function of time', I said. He said, 'No it isn't. It's a discontinuous function of time. There are spurts. People go along and then they suddenly age. They stay at a plateau and they go along. So it's a dirty trick but they say it's better than the alternative.' I don't know, I haven't witnessed the alternative. Woody Allen said about the afterlife… they asked whether he believed in the afterlife and he said, 'Well, can you get a good steak there?' I thought that was a pretty good remark.