Understanding what is beyond expression.

The true nature of reality is beyond expression. Our own nature, the nature of our mind, can be directly encountered, but it is itself inexpressible.

Our minds really struggle with this. Concepts, words and ideas are the currency of our ordinary mind.

There are two terms that are used to approach the understanding of ultimate reality: dharmakaya and dharmadhatu.

Dharmakaya refers to the originally pure, empty nature of our own awareness. It is uncaused, unstained, free from reference points and the extremes of 'it is' or 'it is not'. The metaphor for understanding the dharmakaya is that it is like space. Pure presence is experienced as open, spacious and transparent, with nothing to hold onto.

The dharmadhatu refers to the true nature of reality that is free from the extremes of 'it is' or 'it is not'. The dharmadhatu is the union of the two truths, relative and ultimate, that is itself the infinite play of dependent origination in which no thing is ever truly born. All phenomena being dependently originated, they are empty in nature. Unborn and unceasing, the illusory play of reality unfolds continuously and yet nothing ever comes into being. (If you don't understand this, please ask questions!)

When pure, open awareness of the interconnected universe is made fully evident, one experiences the dharmakaya blending with the dharmadhatu. This is the single sphere of awareness, the non-dual experiential reality of awakened mind. Abiding in the primordial state of the single sphere of awareness, all that appears and exists is but the infinite play of dependent origination as the dynamic energy of awareness.

As soon as concepts, reification or fixation on what is 'real' or 'me' or 'mine', you experience the split into subject and object duality. The result is diminished presence and getting caught up in the wheel of cyclic existence.

You can't think your way to a non-dual experience of reality.