The Dorje Sempa Namkha Che, or The Total Space of Vajrasattva, is said to have been recited spontaneously by Garab Dorje when he was just seven years old. One of the main lungs, or essential texts, of Dzogchen Semde, it is an extraordinarily profound teaching. Replete with cryptic language and references, direct and indirect, to the other vehicles of realization according to the ancient tradition of Tibetan Buddhism, the Dorje Sempa Namkha Che is extremely difficult to understand without a commentary. In this book the root text appears together with the Chagdrel, or Iron Commentary, edited and annotated in the Tibetan version by Dzogchen master Chögyal Namkhai Norbu. Adriano Clemente translated the Tibetan to English.