I have more ideas than I'll ever be able to write in five lifetimes.

The deeper I go into mythology, the more I find. I originally did five 'Percy Jackson' books. I thought that would cover Greek mythology and I couldn't have been more wrong. It's ever-expanding.

The older I get, the less I obsess about material stuff. In fact, stuff has become the enemy. There always seems to be more of it than I have storage in my house!

When I write, I'm still imagining a kid reading it on paper. I read e-books when I travel, but in general I still prefer holding an old-fashioned book in my hands. There's a special, tactile experience.

Weirdly, often the more I write, the more ideas I have.

Writing 'Book 1: The Maze of Bones' didn't feel much different than writing one of my other novels, but I thought it was very innovative to offer the website and trading card components as well for those readers who wanted to go more in depth with the Cahill experience.