That which one person calls “art” often is not “art” at all for the next one. “Beautiful” and “ugly” are old-fashioned concepts, and today there rarely is anything to them any longer; maybe rightly so, who can say? Something revolting, something that causes you a moral hangover, something that hurts your eyes or your ears, could very well be art.
━ M.C. Escher, speech upon receiving the Culture Prize of the city of Hilversum (5 March 1965)