But I knew - in the old days, if a song was a good song, I don't care if it was 'Yellow Submarine' or, you know, or 'The Times They Are a-Changin' or 'Don't Be Cruel', you knew it, you know? You heard that song, and you were talking about it, and you knew it.

No matter how happy or hopeful I am, I always tend to drift back to that. It's underneath all the music I've ever written... An artist is trying to tell you how he's feeling. And if that accidentally becomes entertaining, it becomes a career.

In the autumn of 1970 I had a job singing in the school system, playing my guitar in classrooms.

I had asthma when I was a kid, asthma so bad that it would turn into pneumonia and I almost died several times. Nobody knew why back then, but now it's obvious.