CLUB NONDUALITÈ
The word root guru has a sacred meaning, that my teachers define in a very specific way: the person who not only tries, but succeeds in bringing about a complete change in your mind to such an extend that the grip of duality is loosened and that the nature of mind is totally laid bare in its naked state and can be accessed whenever remembered for the rest of your life. Perhaps the meditator only finds out many years later who the primary guru was.