The interview covers a lot of ground, from why he writes (because he’s good at it) to his success (he was lucky — to him not a facetious statement). I like this quote:

WSJ: Does this issue of length apply to books, too? Is a 1,000-page book somehow too much?

CM: For modern readers, yeah. People apparently only read mystery stories of any length. With mysteries, the longer the better and people will read any damn thing. But the indulgent, 800-page books that were written a hundred years ago are just not going to be written anymore and people need to get used to that. If you think you’re going to write something like “The Brothers Karamazov” or “Moby-Dick,” go ahead. Nobody will read it. I don’t care how good it is, or how smart the readers are. Their intentions, their brains are different.