'Mind, which is our real nature, is the unbegotten and indestructible Womb; in response to circumstances, it transforms itself into phenomena. For the sake of convenience, we speak of Mind as intelligence, but when it does not respond to circumstances, it cannot be spoken of in such dualistic terms as existence or nonexistence. Besides, even when engaged in creating objects in response to causality, it is still imperceptible. If you know this and rest tranquilly in nothingness - - then you are indeed following the Way of the Buddhas. Therefore does the sutra say: 'Develop a mind which rests on no thing whatever.'

... circumstances ...

http://www.superstringtheory.com/forum/dua...ages14/293.html

I have moved this topic to somewhere more suitable, if it develops in the future i'll move it back.