Robert Hughes is back, three years after a crippling car accident in Australia. “The dreadful accident in Western Australia has not extinguished Hughes’s old habits of incidental invective and capsule tirade. I have seen his prose characterized as of the Muscle Beach school, which, transposed to the higher cultural tone of Sydney’s Bondi Beach, seems fair enough. He has done the workouts to get himself into shape, and, if he turned a few handstands and kicked sand at a few ninety-pound weaklings, his pleasure in his own strength and suppleness of mind and pen was infectious.” And thus a new book on Goya…