On the occasion of Maurizio Cattelan's announcement of his retirement from art making, the Guggenheim is marking the closing of the Maurizio Cattelan: All exhibition by holding a multidisciplinary program called The Last Word on Saturday, January 21, at 6 pm. During the seven-hour finale event, thirty or so prominent representatives from the fields of visual art, philosophy, literature, film, music, economics, law, politics and activism, religion, dance, theater, sports, and fashion will come together to contemplate the subject of voluntary endings. Maurizio Cattelan: All brings together…