The original Dzogchen teachings are found equally in the old, unreformed Tibetan schools of the Buddhist Nyingmapas and the pre- Buddhist Bonpos. These teachings are substantially the same in both schools in terms of meaning, terminology, and practice, both traditions justly claiming unbroken lineagmore
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Nowadays there are two principal philosophical traditions followed by Tibetan Lamas. The first is found among the Sarmapas, or Newer Schools, employing the Prasangika Madhyamaka view of Chandrakirti, not only in explication the real meaning of the Sutra system but also in interpretation of the Tantrmore
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