Well, Led Zeppelin IV! That's it really. I'll tell you why the album had no title - because we were so fed up with the reactions to the third album, that people couldn't understand why that record wasn't a direct continuation of the second album. And then people said we were a hype and all, which was the furthest thing from what we were. So we just said, `let's put out an album with no title at all!' That way, either people like it or they don't... but we still got bad reviews!

I do not worship the devil. But magic does intrigue me. Magic of all kinds. I bought Crowley's house to go up and write in. The thing is, I just never get up that way. Friends live there now.

I'm at my best when I'm exhausted and under pressure.

Crowley didn't have a very high opinion of women, and I don't think he was wrong.

I'm still searching for an angel with a broken wing. It's not very easy to find them these days.

Many people think of me as just a riff guitarist, but I think of myself in broader terms. As a musician I think my greatest achievement has been to create unexpected melodies and harmonies within a rock and roll framework. And as a producer I would like to be remembered as someone who was able to sustain a band of unquestionable individual talent, and push it to the forefront during its working career. I think I really captured the best of our output, growth, change and maturity on tape - the multifaceted gem that is Led Zeppelin.

It's interesting when something new comes along, a band of dwarfs playing electronic harps or something, but I'm not searching.