Sometimes you had to make the animals perform.

Animals are more than ever a test of our character, of mankind's capacity for empathy and for decent, honorable conduct and faithful stewardship. We are called to treat them with kindness, not because they have rights or power or some claim to equality, but in a sense because they don't; because they all stand unequal and powerless before us.

My first book, 'Contest,' had a guy fighting aliens in the New York Public Library. The second book, 'Ice Station,' and 'Temple' were present-day military thrillers.

In 'Seven Ancient Wonders,' Jack West and his team break someone out of Guantanamo Bay. I'm not going to preach to people and say, 'Guantanamo Bay, bad', but I will have my hero go and break somebody out of it, and maybe people will think about it that way.

I wasn't one of those kids who dreamed of writing novels when I was 8 or 12. I wanted to be a film director. I wanted to make big action movies. I loved movies like 'Die Hard,' 'Predator,' 'Aliens,' 'Raiders of the Lost Ark.'

I write about all manner of things: a guy fighting aliens in the New York State Library, Antarctica, Inca civilization in Peru, the Great Pyramid at Giza, and people often ask me, where do I get these ideas from? They come from reading widely, watching a lot of documentaries, and increasingly ,as I was able to, travelling around the world.