Due to irresolvable personality conflicts as well as musical differences, I am permanently leaving the band Audioslave. I wish the other three members nothing but the best in all of their future endeavours.

There's something about losing friends, particularly young people, where it's not something that you get over. I don't believe there's a healing process.

In the United States, workouts tend to focus on body image and how you look. For me, it's really all about the brain.

I never wrote music or arranged songs or lyrics when I was under the influence of anything but coffee. That's not gone away.

I can go from one extreme to another, from playing at the Sydney Opera House on the Songbook tour to shows with Soundgarden at Voodoo Fest, all in a week.

To me, music shouldn't be ego-driven. When you go out on stage and play songs, it is. But when you're sitting in a room, writing songs, it's a completely different process. It's a completely different place. It's a creative place, a musical place. It has nothing to do with who likes what.

I think that one of the main privileges of what I do, which I am just starting to learn, is to have the ability to travel all over the world and experience different cultures.