Neil L. Rudenstine graduated from Princeton University (1956), was a Rhodes Scholar at Oxford, earned his PhD in English Literature at Harvard, and remained on Harvard’s faculty until 1968. After two decades as Professor, Dean, and Provost at Princeton, he was President of Harvard University from 1991 to 2001. He was a trustee of the Barnes Foundation and was chair of the boards of ARTstor, the New York Public Library, the Rockefeller Archive Center, as well as vice-chair of the board of the J. Paul Getty Trust. His several books include Sidney’s Poetic Development; English Poetic Satire (with G. S. Rousseau); In Pursuit of the PhD (with W. G. Bowen); and Pointing Our Thoughts. He lives in Massachusetts. Yve-Alain Bois is Professor Emeritus of Art History at the School of Historical Studies at the Institute for Advanced Study in Princeton, New Jersey. A specialist in twentieth-century European and American art, Bois is recognized as an expert on a wide range of artists, from Henri Matisse and Pablo Picasso to Piet Mondrian, Barnett Newman, and Ellsworth Kelly. He has curated and co-curated a number of influential exhibitions, including Piet Mondrian, A Retrospective (1994); L’informe, mode d’emploi (1996); Matisse and Picasso: A Gentle Rivalry (1999); and Picasso Harlequin 1917–1937 (2008). His books include Ellsworth Kelly: Catalogue Raisonné of Paintings, Reliefs, and Sculpture: Vol. 1, 1940–1953 (2015); Matisse in the Barnes Foundation (2015); Art Since 1900 (with Benjamin Buchloh, Hal Foster, and Rosalind Krauss, 2004); Matisse and Picasso (1998); Formless: A User’s Guide (with Rosalind Krauss, 1997); and Painting as Model (1990). Bois is currently working on several long-term projects, foremost among them the five-volume catalogue raisonné of Ellsworth Kelly’s paintings and sculptures.