This book presents an in-depth study of the influence of Indian philosophical and religious thought on W.B. Yeats's poetic and dramatic work. It traces the development of this influence and inspiration from Yeats's early impressionistic work to the mature and elaborate incorporation of Indian ideas into the structure, themes and symbolism of his writing. It recognizes the importance of his Indian friendships-with Mohini Chatterji, and particularly Rabindranath Tagore and Purohit Swami-Indian essays, and shows the limits of his Indianness. While providing a comprehensive analysis of Yeats's poetry and his bizarre poetic play, The Herne's Egg, from an Eastern perspective, the book examines how Indian philosophical concepts guided Yeats in constructing his characters, imagery, and symbology, and in shaping the structure of his dramatic narrative. Yeats's liminal positioning between Orientalism and Celticism, Irish nationalism and British imperialism, and his syncretistic literary aspirations and modernist poetic idiom are probed and explored in order to position him on a pendulum of postcolonial debate. The focus in this book is on the aesthetic appreciation of the parts of Yeats's creative opus where he engaged with Eastern thought, with genuine interest and enthusiasm, when the pendulum swings towards Yeats being a mythopoetic and anticolonial writer.