Shane Salerno and I adapted my book Savages together, and I learned a lot about adaptation. I think it's an extremely difficult thing to do; adaptation might even be more difficult than writing an original screenplay. It's so much a matter of choices, making choices of what to leave in. It was an education.

I have sat with the mothers who have lost addicted sons. I have sat with families of kids who have been killed in drug-related gang violence. I have been to the prisons. I have seen the effects. At some point in time, I felt I had to do something other than write a novel about it, that I needed to try to make some sort of contribution, at least try to make some sort of difference in the real world.

I think people will be surprised at some of the things about the shootings by policemen of unarmed African-American men. But I also think it's a balanced view. Balance has become almost a dirty word these days. It seems we're supposed to pick one side or the other. But these issues are extremely complicated. I think people will be surprised at some of that.

Alcoholism, tobacco, drunk driving, these things will always be with us. There's always going to be a certain percentage of any population that is addicted to certain substances.

Smart people sometimes get stupid, but stupid people never get smart.

What happened with the opioid epidemic is the Mexican cartels made a very deliberate, corporate decision to undercut the price of opioids. What they discovered was they could increase production, increase potency and decrease the price, and sell it for a third of what the Big Pharma could, or street dealers could, for Big Pharma pills. North America, and to a slightly lesser extent Europe, is being flooded with this Mexican heroin as a direct result of the attempt to undercut American pharmaceutical companies.

The devil's in the details. The way I view my job is to bring the reader into a world they otherwise could not enter and let them see it through the character's eyes. And you can only do that with detail. The details make the characters distinct from one another. If you can give them those little grace notes, those little touches, that's what makes the reader relate.