Tsongkhapa's commentary entitled A Book of Three Inspirations: A
Treatise on the Stages of Training in the Profound Path of Naro's Six
Dharmas is commonly referred to as The Three Inspirations. Anyone who
has read more than a few books on Tibetan Buddhism will have encountered
references to the Six Yogas of Naropa, a preeminent yogic technology
system. The six practices--inner heat, illusory body, clear light,
consciousness transference, forceful projection, and bardo
yoga--gradually came to pervade thousands of monasteries, nunneries, and
hermitages throughout Central Asia over the past five and a half
centuries.