Smart people sometimes get stupid, but stupid people never get smart. Never. Ever. 'You can come down the evolutionary ladder,' Chon has observed to Ben and O; 'you can't climb up.

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.

The Force deals a lot with the heroin epidemic, which I'm sorry to know people are experiencing in Canada.

American cops didn't create that atmosphere, they're the ones though who have to live with it on a daily basis. These are generalisations; you can't make generalisations about hundreds of thousands of people. The New York Police Department, for instance, has 38,000 police officers in it. But most cops, when I talk to them, desperately care about the victims of gun violence. They see it, they experience it.

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.

A lot of times, writers are told write as big as you can, and that's not untrue. But at times I think it's better to write as small as you can, to start scenes with little personal details or people who are doing average every day human things. That, to me, lets the average reader into that person's life. "Yeah I eat breakfast. I take a shower."

I try to pay attention to language. I think that as a general rule, we as writers talk too much and we should listen more. I read my dialogue out loud to myself because I think that's when you catch the wrong notes and the wrong tones.