Call it anything you like, it is still one thing. There is nothing else. The One Mind rests upon nothing, and has no source. There is nothing else to realize. The uncreated is invisible.
Mind is beyond nature.
Experience is form. The realization of the One Mind brings deliverance to all. There can be no release until the mental process is mastered. Like oil in a sesame seed, or butter in milk, it does not appear until it is pressed and churned. Everyone can realize their freedom this way.