This is an in-depth exploration of William Butler Yeats' magical life and how it influenced his writing, with a particular focus on his involvement with the Hermetic Order of the Golden Dawn. Drawing on contemporary Yeats scholarship and reproducing extracts from Yeats' letters and magical diaries, Graf traces the development of Yeats' magical and poetic worldview and demonstrates how the two poles fed and nurtured each other. She gives special attention to Yeats' most enigmatic work,A Vision,' published in 1925, when Yeats was experimenting with automatic writing,   

It is often forgotten that Yeats moved through a wide variety of spiritual practices over his lifetime;  he was an early member of the Theosophical Society, a member of the Golden Dawn, and was greatly influenced by Celtic lore, the works of Swedenborg, Jacob Boehme, Neo-Platonism, and later in life, the Yoga Sutras of Patanjali.  This book is valuable to Yeats scholars, to historians of the occult, and to lovers of Yeats' mystical poetry.

W.B. Yeats Twentieth-Century Magus - Susan Johnston Graf