“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.”
Other sources
Source: Banging Your Head Against a Brick Wall
Context: 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.
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Banksy 82
pseudonymous England-based graffiti artist, political activ…Related quotes

George Varga (November 7, 2008) "Tool lead singer hits the right notes in the winemaking community", The San Diego Union-Tribune, p. E-1.

“If you don't have time to read, you don't have the time (or the tools) to write. Simple as that.”
Variant: Can I be blunt on this subject? If you don't have time to read, you don't have the time (or the tools) to write. Simple as that.
Source: On Writing: A Memoir of the Craft

Another excerpt from the Tris Speaker speech – featuring a much more familiar version of the "wasting your time" warning – as quoted in "Standing Cheer for Roberto" by Houston Chronicle sportswriter John Wilson, in The Sporting News (February 20, 1971), p. 44.
Other, <big><big>1970s</big></big>, <big>1971</big>
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Attributed in The Quotable Woman (1991) by the Running Press, p. 53
1990s

Paul Auster, Oracle Night, New York: Henry Holt and Company, p. 168.
Oracle Night (2003)
Source: Al Capone Does My Shirts