In 2009, Graffin announced that he had co-written a book with American author Steve Olson titled "Anarchy Evolution", released on September 28, 2010 (the same day his band Bad Religion released their 15th album "The Dissent of Man"). In his book, Graffin writes that he is an atheist: "I've never believed in God, which technically makes me an atheist". Although Graffin is not religious, he prefers to identify as a naturalist rather than as an atheist. "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." He also filmed and co-produced a television pilot called "Punk Professor".