All human belief systems are inherently flawed.

What makes me feel old is having no hair on the top of my head.

When I saw music as a means to an end - more fame, more money, dating celebrities - that's when things have gone terribly wrong. Now my life is focused on just trying to keep making music. Because when it's really good, it's just the most remarkable feeling on the planet.

I've had my Charlie Sheen moments, it was usually just at the Mars Bar on the corner of First Avenue with me and a few homeless guys.

When you look at the consequences of climate change, at rainforest deforestation, at antibiotic resistance, these are not necessarily political issues, but rather issues that have the ability to threaten our species.

If the entire world decided to become vegan tomorrow, a whole host of the world's problems would disappear overnight. Climate change would decrease by 25 percent, deforestation would cease, rainforests would be preserved, our water- and air-quality would increase, life-expectancy rates would increase, and our rates of cancer would plummet, so certainly, with that one action of becoming vegan you are quite effectively making the world a better place.

People have always been resistant to change. If you go back to the 17th, 18th century, playing guitar was frowned upon. When rock n' roll first started, no one took it seriously.