Some people criticize me for using sources that are a bit low brow (this quote is from 'Gladiator') but you know what? 'I'm just going to use that hostility to make me stronger, not weaker' as Kelly Rowland said on the X Factor.

It's impossible to predict which paintings will last and which won't. In New Orleans I painted on a dilapidated shop in a street littered with abandoned cars and rotting mattresses, then two hours later the piece was gone. It turned out I'd picked the side of a crack house and the proprietor didn't like the attention.

But there's no way round it-commercial success is a mark of failure for a graffiti artist. We're not supposed to be embraced in that way. When you look at how society rewards so many of the wrong people, it's hard not to view financial reimbursement as a badge of self-serving mediocrity.

As far as I can tell the only thing worth looking at in most museums of art is all the schoolgirls on daytrips with the art departments.

The thing I hate the most about advertising is that it attracts all the bright, creative and ambitious young people, leaving us mainly with the slow and self-obsessed to become our artists.. Modern art is a disaster area. Never in the field of human history has so much been used by so many to say so little.

Graffiti ultimately wins out over proper art because it becomes part of your city, it' s a tool; "I'll meet you in that pub, you know, the one opposite that wall with a picture of a monkey holding a chainsaw". I mean, how much more useful can a painting be than that?

There are four basic human needs; food, sleep, sex and revenge.