If you are writing any book about the end of the world, what you are really writing about is what's worth saving about it.
My rule has always been, write the next part of the book that you seem to know well. So I won't necessarily write chapter two after chapter one.
That literary-popular distinction is, in my view, vastly overstated. At the far poles there are clearly books that are purely commercial and purely literary, written for audiences that want to see the same thing enacted over and over and over again. But the middle is where most people read and most people write.
I'm an ecumenical reader, grew up with all sorts of fiction, teach writing, went to the Iowa Writers' Workshop, so my tastes and interests are broad.
When you write, you take the ball and you hold it up to the light and you turn it slowly, and let people draw their own conclusions. And try to bring empathy to all sides of the equation.
Choosing writing as a career, just by itself, is a measure of not being a calculating person.
So, whenever I'm writing, I'm writing in the presence of all the other books I've read and I think we all are.
Writing is a job: you must show up.
If you write a good action sequence well in a novel, you're already writing it for film, because the only way to do it well is to use some of the same tricks. They're rhetorical, not visual, but it's the same move.
I tend to start at 9 o'clock in the morning and write until 3. Those are my best hours. They fit the other rhythms of the world. So I write for six hours, pretty much without any breaks.
I'm a workmanlike writer. I show up every day and treat it like a job. The old rule that writing is like any other job, the first rule is that you must show up. I'm at the keyboard from 9 to 4 every day.
One thing that worried me was how writers get categorized and so they end up having to write the same kind of book again and again. That is fine if it is what you want to do, but I would rather be locked in the trunk of my car with a weasel than write the same book every three years until I die.
You learn to write by reading, and my experiences and tastes as a reader are pretty wide.
One of the traps or the pitfalls of writing a trilogy - or a triptych, or whatever term you want to use - is that the second book can be a long second act to get you from book one to book three, which borrows all of its energy from the first book.