"... the practice of Tantra demands the conviction of the authenticity of tantra, the correct understanding of their processes and their theory and belief in their validity as ways to reach enlightenment. According to Tibetan tradition, Buddha Shakyamouni itself is the source of tantra. Yet this is a matter of dispute among scholars, both Western and Buddhist. Not only that, according to Western scientific standards none of the texts attributed to the Buddha - or the sutras or tantras - can pass the test of authenticity. The question is whether this is essential for practitioners of tantra, or if they are more relevant to other criteria ...."