People say graffiti is ugly, irresponsible and childish. But that's only if it's done properly. - Banksy

"I pretty much use sketchbooks to note down great ideas of somebody else I've just had. A good sketchbook means you don't actually need to bother with having a memory yourself. You can get away with a fair bit of substance abuse if you always carry a notepad and a sharp pencil around with you." [from "Street Sketchbook" by Tristan Manco]

A wall is a very big weapon. It's one of the nastiest things you can hit someone with.

Getting paranoid is an occupational hazard of illicit street painting, which is good. Your mind is working at its best when you're being paranoid. You explore every avenue and possibility of your situation at high speed with total clarity. I'm not interested in looking at things made by people who aren't paranoid, they're not working to their full capacity.