The Heart Sutra is the most widely read, chanted, and copied text in East Asian Buddhism. Here Frederik L. Schodt explores his lifelong fascination with the sutra: its mesmerizing mantra, its ancient history, the "emptiness theory, and the way it is used around the world as a metaphysical tool to overcome chaos and confusion and reach a new understanding of reality--a perfection of wisdom. Schodt's journey takes him to caves in China, American beats declaiming poetry, speculations into the sutra's true origins, and even a robot Avalokiteśvara at a Kyoto temple.