A cultural and personal journey into the famous sutra that teaches "form is emptiness; and emptiness is form."

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.