"....All achools of Vajrayana, both the older and more recent , speak about the buddha nature, the wisdom of clear light. Because it cannot be established to have true existence or to be autonomous
, it is termed "free from elaboration".
" However, although this is the case, we still have to maintain that, because it possesses this continuity, the present fundamental innate mind---this present instant of consciousness---comes from its earlier moments. The same holds true of the wisdom of Buddha---the omniscient mind of Buddha---which perceives the two truths directly and simultaneously, and which is also a state of awareness of consciousness. Since it is a state of awareness, the factor which will eventually turn into that kind of wisdom, namely the fundamental innate nature of clear light, will also have to be maintained to be a state of awarenesss. For it is impossible for anything which is not by nature awareness to turn into a state of awareness. So from this second point of view, the fundamental innate mind of clear light is causally produced."
"This order considers that progress can be achieved more rapidly during a single month of self-transformation through terrifying conditions in rough terrain and in "the abode of harmful forces" than through meditating for a period of three years in towns and monasteries"....Takpo Tashi Namgyal.