Being a father can 'unreason' your worldview, or at least make it very flexible, and that can create all sorts of fun and insights. It's sad that children's open-eyed wonder and sense of play begin to fade as they approach adolescence. One grand function of fathering is to keep the fading to a minimum.

I think I would have written more books if I'd had fewer kids or had them earlier, but I think the books in general would have had a little less spark to them.

I believe there's a secret chemical that's turned loose when you have kids that says you've got to survive, you've got to be strong. That keeps you on your toes, besides all kinds of other things, when you have three little ones running around.

I have a daughter, Catherine, aged 30. I have a 9-year-old son, Nathaniel, a 7-year-old son, Ridley, and a 6-year-old daughter, Truma. I'm 68. The age gap between the younger kids and me is not something I think about much because I feel physically about like I did when I was 40, or at least, I think I do.