I'm still terrified of flying. I really have to get drunk to fly. I've found that I've developed fears I never had before... fears of heights, claustrophobia... only in cities, though, never in the country.

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.

The blues appealed to me, but so did rock. The early rockabilly guitarists like Cliff Gallup and Scotty Moore were just as important to me as the blues guitarists.

Right from the first time we went to America in 1968, Led Zeppelin was a word-of-mouth thing. You can't really compare it to how it is today.

You don't find geniuses in street musicians, but that doesn't mean to say you can't be really good.

I don't want to get too dippy about all this. If you take the view of the scientist and everything is in a state of vibration, then every note is a vibration, which has a certain frequency, and you know that if you put 40 beats into a frequency it's going to be the same note every time. You take that into infrasound and people can be made to be sick, actually killed. Taking it the other way, not to be too depressing, what about euphoria, etc., and what about consciousness being totally... no, I won't go into that one. Time warps.

There are very few people I can call real, close friends. They're very, very precious to me.