Painting is a philosophical enterprise that doesn’t always involve paint.
—Howard Halle, "Photo-unrealism," Time Out New York, December 30, 1999-January 6, 2000, 55-56, quoted in Douglas Fogle, Painting at the Edge of the World, exhibition catalogue, Walker Art Center, Minneapolis, 2001, 18. [n.b.: I first encountered this quote on the wall of an exhibit at Museum of Contemporary Art-Chicago, some years ago.]
Poetry is a philosophical enterprise that doesn't always involve the poetic line.