Longchen Rabjam is the great Teacher of the Nyingma tradition, and in particular of the Dzogchen, the teaching of great perfection, which has reached the realization of dharmakai, the completion of the stage of "exhaustion of phenomena" .. A PROTECTIVE CONTROL OF USTENTAL TEACHINGS - one of the most significant and outstanding works of Longchenpa, included in the SEVEN CONTROLS OF LONGCHEN (Longchen dzodong) . It is a collection of profound teachings on sutras, tantra, and especially dzogchen. In this treatise, the Master gave invaluable advice to those at all stages of spiritual practice and levels of realization, both for the most able and for those whose abilities to comprehend are not so great - for all those who relate themselves to "something" .. These are living words coming from the bottomlessness of immediate comprehension, not from the dead wisdom of borrowed knowledge.