I don't think you should have to pay to look at graffiti. You should only pay if you want to get rid of it.

You owe the companies nothing. You especially don't owe them any courtesy. They have re-arranged the world to put themselves in front of you. They never asked for your permission, don't even start asking for theirs.

Painting something that defies the law of the land is good. Painting something that defies the law of the land and the law of gravity at the same time is ideal.

Keep your coins, I want change.

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

Some people criticize me for using sources that are a bit low brow (this quote is from 'Gladiator') but you know what? 'I'm just going to use that hostility to make me stronger, not weaker' as Kelly Rowland said on the X Factor.

Bus stops are far more interesting and useful places to have art than in museums. Graffiti has more chance of meaning something or changing stuff than anything indoors. 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 those 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 somebody smile while they're having a piss.