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

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.

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.

There's obviously nothing wrong with selling your art - only an idiot with a trust fund would tell you otherwise. But it's confusing to know how far you should take it.

Graffiti is one of the few tools you have if you have almost nothing.

I wouldnt want to be remembered as the guy who contaminated a perfectly legitimate form of protest art with money and celebrities.

Remember crime against property is not real crime. People look at an oil painting and admire the use of brushstrokes to convey meaning. People look at a graffiti painting and admire the use of a drainpipe to gain access.