This is a Tantra of the Great Perfection tradition of Buddhism, and is a thorough presentation of instantaneous enlightenment, translated from a Tibetan manuscript first translated into Tibetan in the 8th Century by Vairochana Rakshita. The literature of the Great Perfection is divided into three sections: The Mind Section, the Space Section, and the Upadesha instruction Section. The Great Tantra of Vajrasattva is a Root Tantra of the Space Section...