Offering a genuinely fresh set of perspectives on Shelley's texts and contexts, Cian Duffy argues that Shelley's engagement with the British and French discourse on the sublime had a profound influence on his writing about political change in that age of revolutionary crisis. Examining Shelley's extensive use of sublime imagery and metaphor, Duffy offers not only a substantial reassessment of Shelley's work but also a significant re-appraisal of the sublime's role in the cultural history of Britain during the Romantic period as well as Shelley's fascination with natural phenomena.