Overall, one of the things that excites me most about self-publishing is that the highest-value use of my time in promoting the books will be found in writing more of them.

Publishing for me is a business, not an ideology.

The two most important things to do for self-defense are not to take a martial arts class or get a gun, but to think like the opposition and know where you're most at risk.

I love Japan, and Tokyo is my favorite city.

If you focus on the risks, they'll multiply in your mind and eventually paralyze you. You want to focus on the task, instead, on doing what needs to be done.

The post office actually achieves its mission. I wish we could say the same of the CIA.

From the outside, the CIA seems pretty exotic, but from the inside, it's a big bureaucratic place. Think 'post office with spies.'