This book is a reappraisal of the role that Berkeley's ideas played in Romanticism, and it pursues his spiritualized philosophy across a range of key Romantic-period poems. But it is also a re-reading of Berkeley himself, as a thinker who was deeply concerned with language and with written--even literary--style. In that sense, it offers an incisive case study into the reception of philosophical ideas into the workings of poetry, and of the role of poetics within the history of ideas more broadly.