Erin L. Thompson is a professor of art crime at the John Jay College of Criminal Justice of the City University of New York. Her book, Possession: The Curious History of Private Collectors (Yale, 2016), looks at the reasons people collect antiquities, and her essays have appeared in The New York Times, The Nation, The Paris Review Daily, The Kenyon Review, and others. For more, find her at www.artcrimeprof.com and on Twitter @artcrimeprof.