A Vision: An Explanation of Life Founded upon the Writings of Giraldus and upon Certain Doctrines Attributed to Kusta Ben Luka, privately published in 1925, is a book-length study of various philosophical, historical, astrological, and poetic topics by the Irish poet William Butler Yeats. Yeats wrote this work while experimenting with automatic writing with his wife Georgie Hyde-Lees. It serves as a meditation on the relationships between imagination, history, and the occult. A Vision has been compared to Eureka: A Prose Poem, the final major work of Edgar Allan Poe.