I mean Filth is the best British film since Trainspotting. It might even be better. I keep watching it back to back with Trainspotting to try and work out which is the best. I can't split them.

I'm always watching people over a short time frame, putting them in an extreme position. Sometimes you don't see the humanity in a person because the time frame is so short and the circumstance so extreme.

Now, for the first time, he's seeing that there really is a way out of this, and it's all so simple. You don't have to run away. You just meet somebody special and step sideways into a parallel universe.

Sometimes ah think that people become junkies just because they subconsciously crave a wee bit ay silence.

You can only live in the world you ken. The rest is just wishful thinking or paranoia.

Choose life … I chose not to choose life. I chose something else. And the reasons? There are no reasons. Who needs reasons when you’ve got heroin?

Now there is apparently a causal link between heroin addiction and vegetarianism.