Our true nature is not material. So how can it be explained? 
Whatever is explained, is downstream. Although truth, reality cannot be explained, once it is deeply recognized, it can be alluded to metaphorically and it can be experienced in/as the silent presence of the awakened mind and in/as the silence that permeates the words that arise from the awakened mind.
Once you sense the inner bliss whichever way it arises, remain on that trail.
You know you are on the right trail as the peace and happiness become more prevalent in your life.