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.

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

It doesn't take much to be a successful artist-all you need to do is dedicate your entire life to it.

Art is not like other culture because its success is not made by its audience. The public fill concert halls and cinemas every day, we read novels by the millions, and buy records by the billions. 'We the people' affect the making and quality of most of our culture, but not our art.

A wall is a very big weapon. It's one of the nastiest things you can hit someone with.

I wanted to highlight the destruction in Gaza by posting photos on my website - but on the internet, people only look at pictures of kittens.

Writing graffiti is about the most honest way you can be an artist. It takes no money to do it, you don't need an education to understand it, and there's no admission fee.