Well I'm frustrated by many things but trying to get accepted by the art world isn't one of them. This seems difficult for some people to understand … - Banksy

The problem with painting in Zoos is that it's slightly too effective. They tend to get rid of it as soon as possible. I'd had enough when the rope ladder into the Chimpanzee enclosure at the Sydney Zoo snapped and I fell into the moat getting a mouthful of monkey piss. By 10am the next morning the words 'Please help me get out of here I am the victim of a cruel scientific experiment... I am not a monkey... Somebody do something' had been completely painted over. The solution was to write stuff on cardboard and throw it into the enclosures when no one was looking. Then you just sit back and listen to the explanation parents give as their kids ask 'Why don't we just let them go home if they want to, mummy?'

At least graffiti has a fighting chance of meaning a little more to people. Graffiti has been used to start revolutions, stop wars and generally is the voice of people who aren't listened to. Graffiti is one of the few tools you have if you have almost nothing. and even if you don't come up with a picture to cure world poverty you can make someone smile while they're having a piss.

"If you only ever read one book in your life I highly recommend... keeping your f***ing mouth shut." [sic]