When he time comes to leave, just walk away quietly and don't make any fuss.

I’ve learnt from experience that a painting isn’t finished when you put down your brush – that’s when it starts. The public reaction is what supplies meaning and value. Art comes alive in the arguments you have about it.

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.

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 have no interest in ever coming out. I’m just trying to make the pictures look good; I’m not into trying to make myself look good. And besides, it’s a pretty safe bet that the reality of me would be a crushing disappointment to a couple of 15-year-old kids out there.

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.

I used to encourage everyone I knew to make art; I don't do that so much anymore.