Yoga is hugely popular around the world today, yet until now little has been known of its roots. This book collects, for the first time core teachings of yoga in their orginal form, translated and edited by two of the world's foremost scholars of the subject, It includes a wide range of texts from different schools of yoga, languages and eras: among others, key passages from the early Upanisads and the mahabharata, and from the Tantric, Buddhist and Jaina ...