"The fundamental state - which dawns in conscious orgasm - is not a dimming of the mind although it is often experienced as such because all of the usual conceptual minds are withdrawn during it. Rather, it is the basis of all phenomena - the stable (the environment) and the moving (the beings in the environment); our unfamiliarity with it causes its implictions to be missed in unconsciousness. Through developing realization of the emptiness of inherent existence and through developing great compassion, one can become closer to this state."
"The pleasure of orgasm is so intense that the mind becomes totally withdrawn in and fascinated with it such that both the usual conceptual mind and the appearances that accompany it melt away, leaving basic reality. Through consciously experiencing this process, one can realize that ordinary conceptions and appearances are over-concretized. Sex, therefore, can become a practice through which this exaggeration of the status of appearance and mind is identified and subsumed in the source state."
From ‘Tibetan Arts of Love’
by Gedün Chöpel and Jeffrey Hopkins