I don't bill myself as an atheist but as a naturalist. Naturalism is a belief system. A lot of scientists bristle at that. We all have to believe we can find the truth. Evidence is my guide. I rely on observation, experimentation and verification.

I believe in strong legislation for the environment. So the only question is being smart enough and educated enough to scrutinize the people who are writing the legislation, because there are plenty of ulterior motives out there.

It's my firm conclusion that human meaning comes from humans, not from a supernatural source. After we die, our hopes for an afterlife reside in the social networks that we influenced while we were alive. If we influence people in a positive way -- even if our social web is only as big as our nuclear family -- others will want to emulate us and pass on our ideas, manners, and lifestyle to future generations. This is more than enough motivation for me to do good things in my life and teach my children to do the same.

I was in a choir as a kid. It was from those early days that my outlook on harmonies and arrangements were nurtured. I always took that with me, even on the earliest Bad Religion record, which strangely was only about six years after that.

You can't take up all the music bins at a CD retail outlet with Spice Girls CDs and leave nothing for the Joan Jett catalogue.

We should enjoy and make the most of life

Almost everyone shuts down when science becomes too technical; you've got to infuse it with entertainment and storytelling to make it effective. From high school on, science is taught in a very dry manner, which isn't as potent.