John Ruskin; the Victorian art critic, social reformer and philanthropist said "The measure of any great civilisation is its cities and a measure of a city's greatness is to be found in the quality of its public spaces, its parks and squares". Clive Wilmer, fellow at Sidney Sussex College, University of Cambridge has written extensively on Ruskin, and is the Master of Ruskin's charity, the Guild of St George. He delves into Ruskin's past, and describes his relationship with Sheffield.