I'd always done a lot of sniffing glue as a kid. I was very interested in glue, and then I went to lager and speed, and I drifted into heroin because as a kid growing up everybody told me, 'don't smoke marijuana, it will kill you'.

When you look at the whole explosion of the Internet, the decline of print journalism, there are all of these plus-or-minus ramifications, and you have to work it out. The great thing about books is that you have a tactile thing that's there. You can download this or download that, but how long do you want to be staring at a screen for the rest of your life? You've got to have some kind of proper interface for people that's not about the screen.

You have to let people express themselves in the way that they need to express themselves. You have to express yourself in any way possible, provided you're prepared to live with the consequences.

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 think Scotland's got its own issues, in some ways similar to Northern Ireland with sectarianism, which has been a long-running sore. All the issues of land ownership, development resources, poverty, alcoholism and violence, all these things.

I grew up in what was not so much a familyas a genetic disaster.

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