We don’t need any more heroes; we just need someone to take out the recycling.

I think its pretty clear that film is the pre-eminent art form of our age. If Michaelangelo or Leonardo Da Vinci were alive today they’d be making Avatar, not painting a chapel. Film is incredibly democratic and accessible, it’s probably the best option if you actually want to change the world, not just re-decorate it.

It's impossible to predict which paintings will last and which won't. In New Orleans I painted on a dilapidated shop in a street littered with abandoned cars and rotting mattresses, then two hours later the piece was gone. It turned out I'd picked the side of a crack house and the proprietor didn't like the attention.

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.

Not everyone will understand your journey. That's okay. You're here to live your life, not to make everyone understand.

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

I used to tell everyone I met to be an artist..... I don't do that any more.