I beg young people to travel. If you don't have a passport, get one. Take a summer, get a backpack and go to Delhi, go to Saigon, go to Bangkok, go to Kenya. Have your mind blown. Eat interesting food. Dig some interesting people. Have an adventure. Be careful. Come back and you're going to see your country differently, you're going to see your president differently, no matter who it is. Music, culture, food, water. Your showers will become shorter. You're going to get a sense of what globalization looks like.

I have had a number of less-than-enviable moments in my life when dealing with other people. I won't attempt to blunt that by saying I am not the only one.

Black Sabbath - one of the world's universal language of music. I felt proud, for three or four minutes of my life combining my voice with Tony Iommi's guitar sound.

I wouldn't want to roll the dice on Kabul by myself, because I really think getting killed is definitely a possibility there. A very good possibility.

Now you see how you are, the wisdom mixed in with all the scars.

I have no artistic sensibilities. I wish I did. It is probably really cool. I have work habits and work ethic. For me, all the things I do are jobs.

I tend to gravitate to the darkest or most obscure part of any venue in an effort to have my own space to experience the music on my own, free from unwanted conversations and other distractions.