Reading the Bon flowering light tantra, this gem stuck out.

"The Heart is the place of the mind, it is the Great Waterhouse, the great watershed of the human consciousness.All life moves through it and comes back to it; all thoughts arise from out of it and return back to it. What is this Heart? The heart is the nature of ourselves, made from time yet beyond time, creating space yet not of space. Creating patterns and forms that give rise to the material world. Through our attachment we create the heart also. 

All the world is real, our reactions to it are not, our responses to it are not."