Urgyen Tulku - Describing Nature of primordial mind, Dzogchen

Tulku Urgyen Rinpoche (1920–1996) was a master in the Dzogchen tradition of Tibetan Buddhism. Teachers of Dzogchen, the Great Perfection. You can read more here. The Sunlit Sky of Tulku Urgyen Rinpoche - Erik Pema Kunsang Existence & Nonexistence Teachings on Dzogchen