When the former South African president passed away earlier this month (Dec13), celebrities and global leaders alike took to Twitter.com to mourn the icon.
And while the Black Sabbath frontman has nothing but respect for Mandela, he is adamant that there should be a line drawn between the worlds of entertainment and politics.
He tells NME, "I don't touch politics. I leave that to (U2's) Bono. He won't be happy, now that his best mate Mandela has gone. But I'm not politically motivated. I sang songs about political situations, wars and that, but they're all f**king liars if you ask me.
"It's sad that he's gone because he was such a good hope guy for so many people. But it became the clique thing to be photographed with Mandela, you know? He seemed like a good guy but he was f**king 95, at the end of the day. I bet he was tired!
"I think entertainers should stay entertainers and politicians should stay liars. If you say you'll do something and you can't do it, you should get fired, because you got your job under false pretences, I think so anyway."