I think the only boundaries are individual and personal. A writer should be free to write about anything he or she wants to, including the twin towers. I have made small references to 9/11 in my past two books.

I may sound facetious but I really think these stories are all interrelated and therefore really only one series.

What is overriding that and most important is that readers generally are interested in a good character. They might be more comfortable with Harry because they think they know him, but they always seem willing to give somebody new a chance.

Ever since college, I have been a libertarian - socially liberal and fiscally conservative. I believe in individual liberty and personal responsibility.

Voting is an individual, personal thing.

The philosopher Friedrich Nietzsche once wrote that when you look into the darkness of the abyss the abyss looks into you. Probably no other line or thought more inspires or informs my work.