Borges, Jorge Luis. On Mysticism. Penguin Classics. On Mysticism is a collection of Borges' essays, fiction and poetry that explores the role of the mysterious and spiritual in Borges' life and writing. Borges had profound knowledge of eastern religions and was raised by a philosophically astute father. As a result he was preoccupied with a metaphysical uneasiness that infiltrated his work. This book is a unique collection of Borges' meditations on the mystical realm that fascinated him so much. Paperback. 6/29/2010. 128 pages. keywords: Borges, Jorge Luis - Prose & Criticism. 9780143105695.