Forty years ago, a young art historian published his first book, and changed the way scholars and art lovers looked at neo-Classical art. Robert Rosenblum, “who died in December at 79, went on to become the most consistently edifying art historian of his generation. With a combination of iconoclasm, faultless lucidity and wit, he smashed aesthetic prejudices the way physicists smash atoms. There ought to be a Nobel Prize for that sort of achievement.”