If you don't own a train company then you go and paint on one instead... it all comes from that thing at school when you had to have name tags in the back of something... that makes it belong to you. You can own half the city by scribbling your name over 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.

Graffiti is one of the few tools you have if you have almost nothing.

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.

The human race is the most stupid and unfair kind of race. A lot of the runners don't even get decent sneakers or clean drinking water. Some runners are born with a massive head start, every possible help along the way and still the referees seem to be on their side. It's not surprising a lot of people have given up compeating altogether and gone to sit in the grandstand, eat junk and shout abuse. What the human race needs is a lot more streakers.

Nobody ever listened to me until they didn't know who I was

Policemen and security guards wear hats with a peak that comes down low over their eyes. Apparently this is for psychological reasons. Eyebrows are very expressive and you appear a lot more authoritative if you keep them covered up. The advantage of this is that it makes a lot harder for cops to see anything more than six foot off the ground. Which is why painting rooftops and bridges is so easy.