This image file is very useful in a discussion on What is Art? and Why we do art?It introduces and describes the ideas behind 4 Theories of Art:Formalism, Imitationalism, Instrumentalism and Emotionalism.It draws from the examples of Piet Mondrian (Broadway Boogie Woogie)Caravaggio (Narcissus), Jacques-Louis David (The Death of Marat) andEdvard Munch (The Scream).