I wrote Her First American and I always say it took me eighteen years. It took me that long was because after about five years I stopped and wrote Lucinella. I got stuck; it was too hard to write. Lucinella felt like a lark. I wanted to write about the literary circle because it amused me, and I allowed myself to do what I wanted to do. It's just one of the things I'm allowed to do if I feel like it.

My idea in Half the Kingdom was simply, or not so simply perhaps, that medical science has given us twenty extra years of life. Those twenty extra years - one is grateful for them, one is happy, but they also give you ten or twenty years more of losing your faculties. That is actually the origin of my notion. Once you live longer than you're supposed to live, things go dreadfully wrong. But nevertheless, you're not dead.

Did the nineteenth-century novelists create more generously than we do now? In a general reading of contemporary work, do you see a lot of new and different characters, or is it the same character who is a stand-in for the writer? And it's interesting enough, but it's a weakness I think. We are much more self-revealing and less able to produce new people over and over again.

I dare say you believe I'm going to die. I bet you don't believe you're going to die. You know it, but you don't believe it. Imaginatively, I think we find it impossible to believe we don't exist.

It's hard for us sophisticates to believe, but the people my parents worked for were good people. They were socialists of the heart. They were Scottish upper class. I don't think they had political theories in the way my lefty friends in New York do but they did all the things that socialists do. My mother was the Jewish cook from Vienna and they would say, "Come and have dinner with us." I spent weekends with them. Who does that? This is Utopia.

I imagine witches to be people who sit around like my witty grandmother, people who are injustice collectors or humiliation collectors. I choose to imagine that's what a witch is. The reason witches are so evil is because they're so unhappy and so hurt.

Once you start on an idea it proliferates in itself.