CATHERINE DUMONT D'AYOT, born in France in 1965, studied architecture at the University of Geneva and at the Ecole polytechnique federale de Lausanne. She has been teaching and researching at the University of Geneva since 1995 and at the ETH Zurich since 2006. TIM BENTON, born in Rome in 1945, was educated at Cambridge and the Courtauld Institute of Art, London. He taught for forty years at the Open University England and is currently professor emeritus in the history of art.