Paul Klee’s studio was once described as an alchemist’s lair, stuffed with the materials and instruments that he made and kept about him—home-made brushes, whittled reed pens, dental picks and razor blades fastened to improvised handles, gesso-caked cups and bent bits of wire to scrape, incise, and abrade the compounded surfaces of his paintings.
The Art of Looking Sideways (London: Phaidon, 2001), 24.