I have a theory that you can make any sentence seem profound by writing the name of a dead philosopher at the end of it.

I love the way capitalism finds a place - even for its enemies.

Brandalism Any advertisement in public space that gives you no choice whether you see it or not is yours. It belongs to you. It's yours to take, rearrange and re-use. Asking for permission is like asking to keep a rock someone just threw at your head.

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.

Gaza is often described as 'the world's largest open air prison' because no-one is allowed to enter or leave. But that seems a bit unfair to prisons - they don’t have their electricity and drinking water cut off randomly almost every day.

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.

You're mind is working at its best when you're being paranoid. You explore every avenue and possibility of your situation at high speed with total clarity.