John Baldessari: Pure beauty [... on the occasion of the exhibition "John Baldessari. Pure Beauty", which was organized by Tate Modern and the Los Angeles County Museum of Art ; exhibition itinerary: Tate Modern, London: October 13, 2009 - January 10, 2010 ; Museu d'Art Contemporani de Barcelona (MACBA): February 11 - April 25, 2010 ; Los Angeles County Museum of Art (LACMA): June 27 - September 12, 2010 ; The Metropolitan Museum of Art, New York: October 17, 2010 - January 9, 2011]