David Hockney is perhaps the most critically acclaimed artist of our age. He has produced work in almost every medium and has stretched the boundaries of all of them. His bestselling Secret Knowledge: Rediscovering the lost techniques of the Old Masters is also published by Thames & Hudson, as are his previous books in partnership with Martin Gayford: A Bigger Message and A History of Pictures. Martin Gayford is art critic for The Spectator. His books include Modernists & Mavericks, Man with a Blue Scarf, A Bigger Message, Rendez-vous with Art (with Philippe de Montebello), A History of Pictures (with David Hockney), and, most recently, The Pursuit of Art, all published by Thames & Hudson.