“I suppose nowadays it's all a question of surgery, isn't it? Of course the notion is beautiful, the idea of staying a boy and a child forever, and I think you can. I have known plenty of people who, in their later years, had the energy of children and the kind of curiosity and fascination with things like little children. I think we can keep that, and I think it's important to keep that part of staying young. But I also think it's great fun growing old.”