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.

The one thing you can rely on is if you get disturbed halfway through a painting and it looks a bit naff, then someone will preserve that piece, remove it and a few months later it'll be paraded round Sotheby's by people wearing white gloves.

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

The thing I hate the most about advertising is that it attracts all the bright, creative and ambitious young people, leaving us mainly with the slow and self-obsessed to become our artists.. 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.

If you feel dirty, insignificant or unloved, then rats are a good role model. They exist without permission, they have no respect for the hierarchy of society, and they have sex 50 times a day.

Speak softly, but carry a big can of paint.

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.