I do still get the odd fan letter about The Good Life, clearly written by somebody aged 18, who says: Will you send a photograph? And I think: Maybe it's kinder not to. I'm deeply into my 50s now.

I think you have to relax about aging. What else can you do?

I think very few people do find a relationship where, every moment of every day, everything they do comes together. That's why, in a nutshell, everyone loved Barbara in 'The Good Life.' She was the perfect partner. It was a formula. She wasn't glamorous. She wasn't clever. But she was a good partner. That's too easy, too perfect.

I don't think, until you've actually lost somebody you really love, that you can go through that door that allows you to be grown-up.

I think I've always had a 40-year-old body, and now that I'm actually there I'm like, 'Hey, pretty good, huh?'

My parents were very volatile but very loving. My father would get jealous if my mother looked at somebody. I used to be insanely jealous. It comes out of insecurity. It can come and go, but you get to the point in life where you don't have this raging jealousy and protectiveness about your world.