Let me explain something about guitar playing. Everyone's got their own character, and that's the thing that's amazed me about guitar playing since the day I first picked it up. Everyone's approach to what can come out of six strings is different from another person, but it's all valid.

There will be a Led Zeppelin as long as there's a Jimmy Page, John Bonham, John Paul Jones and Robert Plant. This isn't a nostalgia band playing the hits forever. If anything ever happened and somebody left - which I really can't see happening - I don't think we'd bother to carry on. The magic for me is as it is now.

The element of change has been the thing, really. We put out the first one, then the second... then a third LP totally different from them. It's the reason we were able to keep it together.

You can't overthink the music. Mood and intensity can't be manufactured. The blues isn't about structure; it's what you bring to it. The spontaneity of capturing a specific moment is what drives it.

I feel Aleister Crowley is a misunderstood genius of the 20th century. Because his whole thing was liberation of the person, of the entity, and that restrictions would foul you up, lead to frustration which leads to violence, crime, mental breakdown, depending on what sort of makeup you have underneath. The further this age we're in now gets into technology and alienation, a lot of the points he's made seem to manifest themselves all down the line.

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

The gut-strung guitar, the classical guitar, that is a whole different world on its own. When you think what the guitar can do and what every individual player does with a guitar, everyone has their own identity coming through the guitar.