The biggest thing has been realizing how much people really do love the early Sabbath music. People have said it in the past but I've never really believed them before. I remember years ago when Metallica opened up for me, I went backstage and they were playing old Black Sabbath albums and I thought they were taking the piss! They said, 'No, we really love Sabbath.' I couldn't see that at the time--because towards the end of my time with Sabbath 20 years ago I thought what we were doing was boring and stupid, because we were boring and stupid, totally sick of what we were doing and totally out of our brains with drink or drugs when we were playing it.

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