I don't want to get into a discussion of 'what it is' because such things are tenuous at best.
It crosses my mind that if one wants to look one can also find evidence that would suggest that the desire to go 'higher' itself is one of those things that leads to all sorts of rationalizations. And not all rationalizations are in 'words'. I'm not going to say more about that unhappy topic though...
Anyway I'm really only writing here to point out that there IS an established way to use mind to get beyond mind. Basically, you set the mind loose on pondering itself and its own ways?
The taoists called this 'making the disease diseased'. It was apparently a component in the creation of 'sages'.
