Unity

So the unity of everything is complete radiance, complete expansion, completely itself. In its final free expression, it is pure blinding brilliance, so blinding that you are effaced. This brilliance can be experienced as a clarity and intelligence, as an exploding intelligence that shatters all darkness and ignorance. At the same time it is pure love, most delicate and soft, and in the same instant the strongest and most powerful will. It is not three different things put together, but all one, the brilliance of the aspects of Essence, the source and inner nature of every living thing and of all creation. (Diamond Heart Book 2, pg 29)

Unity and the elixir of enlightenment

Our deepest, truest most inner nature is that of unity, of complete unification with no discrimination or differentiation, and this deepest innermost nature must manifest as the transforming agent. This is what is called the elixir of the mind, or the elixir of enlightenment. It reveals itself in whatever form you need in order to learn about unity. If you are interested in the mind, it will reveal itself as mind. If you are more heart-oriented, it will reveal itself as heart. If you are action-oriented, it will reveal itself as will. It loves you so much it is willing to be less than itself so that you will learn about it ... it is itself pure intelligence, and everything is a result of that intelligence. It includes even ignorance and suffering that results from ignorance. This primary first cause, this primary intelligence which every human being has, is itself the hope for unification, and the agent of unification. It is what goes through the process of unification, and leads towards the final result of unification, the unity. It includes differentiation and the movement toward differentiation because even that is part of a bigger movement toward unification. Every living being has some intelligence, an intelligence that is pure brilliance... The innermost nature of everything which exists is this source and agent of unity. (Diamond Heart Book 2, pg 27)

Unity and the formless dimensions

The Nonconceptual Nameless Reality is the same as nondifferentiated Pure Being, but realized beyond mind. The Absolute is the same as the Nameless Reality, but now realized beyond consciousness. This means it is the nature of all existence, it is all existence, it is everything and it is beyond everything. Hence it is the ultimate nature of all differentiated aspects of Being. There can be perception of differentiation, which here means difference and variety, but not separation. There is absolute oneness of all that appears to perception; however, it is not conceived of as oneness, since there is no conceptualization. There is unity as the nature and Essence of all. (The Pearl Beyond Price, pg 474)

Unity and perception

The unity which makes concepts transparent is apprehended through a capacity to perceive which has nothing to do with the physical senses. The basis of unity is not in the physical world. It is a little bit confusing for me to say it that way, because I don’t see the physical world the way we generally think of it. There is a physical world only from the perspective of the physical senses. If more of you is operating, the world you inhabit is not just the physical world, and in this world there are no objects that are separate and absolutely independent of each other. In perceiving the nonseparateness, or unity, you do not lose your capacity to discriminate in the physical world; you just do not see differentiated objects as actually separate. As we have been discussing, the process of discriminating and conceptualizing objects leads to reifying them as discrete and separate entities. This process in turn tends to restrict our perception to the physical senses, because it eliminates our experience of the unified awareness that underlies the concepts; it excludes the perception of the unity of reality. (Diamond Heart Book 4, pg 306)

This perception of the unity and the inseparability of all change and transformation can take many forms. First, it can be the experience of seeing all of existence as a presence that is patterned. This presence is not static but is, in its unified totality, in constant flow. This unified flow occurs in such a way that its pattern is continuously changing and evolving ... This pattern is always changing as the flow is unfolding. So, the unfoldment or flow of Being manifests as the changing of the pattern of the unity, continuously changing the patterns of how things appear. It is like seeing the whole universe as one river that is constantly changing as it flows. We not only perceive this change as changes, transformations, movements, and evolutions in the cosmic pattern, but we also see that these changes and movements include what we ordinarily perceive as our actions and the actions of other living beings. So Being is not only presence, but the flow of presence. It is the flow of nowness in continuous transformation of the universal pattern. This flow is what we usually perceive as the passage of time. In other words what we call time is a limited way of intuiting the flow of Being. Since we ordinarily don't perceive the unity of existence, and so don't experience change as the flow of Being, we think of change as due to the passage of time. (Facets of Unity, pg 260)

Experiencing oneself as the immediacy of pure presence, or as the expense that is the inner nature of everything, we experience the state we call "unity." It is the experience of true nature as if from the inside, from its own side, and not from the side of manifest forms. We see that it is an indivisible experience, a single medium with no inner distinctions, similar to the empty sky. The other kind of experience, that of oneness, is experiencing pure presence from the vantage point of the manifest forms. We experience ourselves as the oneness of all these forms, that all the forms constitute one Reality, whose nature is pure presence. We are aware of pure presence as the constituting ground of everything, but we are not in the midst of the expanse of true nature, but in the midst of the surface of manifestation. (Inner Journey Home, pg 301)