Society is about masks and hiding and pretending to be something that you're not and not opening up, and in acting, you do all of those things, but it also shows the performers in a very raw state. They have to literally upset themselves to get to that position sometimes. You don't need a load of people judging you or not being interested in what you're doing or being an ass on set because it ruins it.

If you judge everything by how photographically real it looks, then you're missing out on a lot of what art is about and what communication is. There are ambiguities in life, and that should be reflected in art, cinema, and storytelling, I think.

I'm very superstitious about going on other people's sets. You have to ask permission of the director; you shouldn't just turn up and skulk about in the background. It's very rude. You have to ask them personally. It's like a vampire being invited into a house.

If an actor commits properly to a role, they do a bit mad during a shoot. If they're going to do that, they should balance themselves by doing a role as a yoga teacher.

I've had pretty much the same crew for all the films that I've made, and I've managed to have really nice, calm, funny people. That is a big part of it, a family feeling of warmth and finding something interesting and making a platform for them to perform. It's a very difficult job, acting, in that it's totally counterintuitive to how we are brought up.

I think a big part of my job is to make an atmosphere on set and have an attitude that it's about experimentation, and you can't do anything wrong. It's not about judgment, it's not about me kicking over a chair and storming onto set and acting stuff out and telling people to copy what I do. That is a style of directing some people have, but I don't understand it.

Lots of crime films are about work. Free Fire could have been about a company of plumbers doing pipe-fixing and stuff. But the plumbing film is not so exciting.