Martin Brauen, PhD, is a cultural anthropologist, curator, and author. From 2008 to 2011 he was chief curator at the Rubin Museum. Since his retirement he has independently curated several exhibitions, including Bill Viola: Passions at the Cathedral of Bern and The Cosmos at the Museum Rietberg, Zurich, and published A Sameness Between Us: The Friendship of Charmion von Wiegand and Piet Mondrian in Letters and Memoirs.