Neil Mann works as an editor, translator, and teacher, and as an independent scholar, specializing in the works of W. B. Yeats, particularly his esoteric interests and A Vision. He is one of the readers who is simultaneously frustrated and fascinated by A Vision and the system that W. B. Yeats and his wife, George, elaborated through years of occult experiment and personal research. In 2002, he created the website YeatsVision.com as a resource for those seeking to understand this work better, and this book is the result of some forty years of engagement with A Vision, Yeats's work as a whole, and the background of nineteenth-century spirituality. Matthew Gibson is Associate Professor of English Literature at the University of Macau. He is the author of 'Yeats, Coleridge and the Romantic Sage' (Macmillan, 2000) and 'Dracula and the Eastern Question: British and French Vampire Narratives of the Nineteenth Century Near East' (Palgrave Macmillan, 2006). He is presently completing a new monograph for the University of Wales Press, called 'Nineteenth Century European Gothic: Vampires, Doubles and the French Revolution'. Claire V. Nally is a Lecturer in Twentieth-Century English Literature at the University of Northumbria. She has published on Yeats in the 'Irish Studies Review' and the 'Canadian Review of Irish Studies', as well as writing the monograph 'Envisioning Ireland: W. B. Yeats’s Occult Nationalism' (Peter Lang, 2009).