Living for ever would be like marrying yourself, with no possibility of a divorce.

In some ways I'm a frustrated scientist or mathematician. The amount of times I've thought I'd go back to university and do theoretical physics because I like the big questions, but really I know now that that's not quite me. What's me is to do it in novels.

I wonder if the reason I tend to say yes to everything is because I deeply believe that I can survive anything.

I pray for meaning. I pray for the limits of reality to become clear. For a world – and a type of being – that makes sense. I pray for a life after death that is not like this life. I pray for the end of mystery. What would a life be like with all the mysteries solved? If there were no questions, there’d be no stories. If there were no stories, there’d be no language. If there was no language there’d be no . . . What?

I erased the thought from my mind, but I couldn't undo the fact that I'd had the thought in the first place.

I think predictability is built into any good novel in some way - you begin reading Anna Karenina and you know pretty much what's going to happen at the end. But that doesn't mean you know what's going to happen in the middle. For me, it's that sense of what happens in the middle that's important.

So if we're all quarks and electrons ..." he begins. What?" We could make love and it would be nothing more than quarks and electrons rubbing together." Better than that," I say. "Nothing really 'rubs together' in the microscopic world. Matter never really touches other matter, so we could make love without any of our atoms touching at all. Remember that electrons sit on the outside of atoms, repelling other electrons. So we could make love and actually repel each other at the same time.