I never thought I could write anything or do a show sober, ever. But I did the Black Sabbath shows sober, and it was so much better fun for me, and everybody.

Somebody said to me this morning, 'To what do you attribute your longevity?' I don't know. I mean, I couldn't have planned my life out better. By all accounts I should be dead! The abuse I put my body through: the drugs, the alcohol, the lifestyle I've lived the last 30 years!

You're chasing the dragon, you're chasing the high. A bird with one wing, who's still trying to fly.

You gotta be really careful what you bite off. Don't bite off more than you can chew. It's a dangerous world.

Occasionally, I go off the rails. I once nearly killed somebody once - it wasn't funny. I am a lunatic. The pressure of work, the pressure - everyone has a stop valve, and I don't have one.

I used to fantasize that Paul McCartney would marry my sister.

There are no unachievable goals.