I don't even think about the word. But I do have certain things where I just go, "Aaaaahhh," irritatingly boring and insistent because I want it to look that way and I can do it - I don't even know if you'd call it passion or obsession. Obsession, possibly, but I really love what I do.

The most tragic moment of my life was the first show I ever designed for. I had been asked to make shoes for Ossie Clark's show in the early '70s. I was so inexperienced that I didn't put the steel in the heels of the shoes, which is required to support the shoe and the wearer. So the girls came out walking very strangely in these rubber, bendy high-heeled shoes I had made. I thought 'Oh dear god! This is the end of me.' But after the show, even David Hockney and Cecil Beaton said to me 'It was so interesting that the girls were moving in such a different way.'

I don't think about myself very much.

Men tell me that I've saved their marriages. It costs them a fortune in shoes, but it's cheaper than a divorce. So I'm still useful, you see.

If I look back I feel frightened, not happy, because my life is a bit of a mystery to me.

I hate these platforms that are all over the place today; they are all about grabbing attention. They are suburban! I never do a platform. Well, I did, in the 1970s, but that was a bad experience.

It was so interesting that the girls were moving in such a different way.