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.