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.

You don't need planning permission to build castles in the sky

The grumpier you are, the more assholes you meet.

Become good at cheating and you never need to become good at anything else.

The time of getting fame for your name on its own is over. Artwork that is only about wanting to be famous will never make you famous. Any fame is a by-product of making something that means something. You don't go to a restaurant and order a meal because you want to have a sh*t.

Speak softly, but carry a big can of paint.

I don't know why people are so keen to put the details of their private life in public; they forget that invisibility is a superpower.