" One of my dad’s colleagues said, “She wants to paint with her shit. Maybe we should give her paints.” And it worked.’ Mary Barnes eventually became a celebrated and much-exhibited artist. Her paintings were greatly admired throughout the 1960s and 1970s for illustrating the mad, colourful, painful, exuberant, complicated inner life of a schizophrenic. "

― Jon Ronson , The Psychopath Test: A Journey Through the Madness Industry