Is graffiti art or vandalism? That word has a lot of negative connotations and it alienates people, so no, I don't like to use the word 'art' at all.

I like to think I have the guts to stand up anonymously in a western democracy and call for things no-one else believes in - like peace and justice and freedom.

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

All graffiti is low-level dissent, but stencils have an extra history. They've been used to start revolutions and to stop wars

Imagine a city where graffiti wasn't illegal, a city where everybody could draw whatever they liked. Where every street was awash with a million colours and little phrases. Where standing at a bus stop was never boring. A city that felt like a party where everyone was invited, not just the estate agents and barons of big business. Imagine a city like that and stop leaning against the wall - it's wet.

The holy grail is to spend less time making the picture than it takes people to look at it.

All artists are willing to suffer for their work. But why are so few prepared to learn to draw?