Quintessence
We refer to the nature of this dimension as quintessential presence,
or simply quintessence. Quintessence reveals the most true and
objective relation the absolute has to the other dimensions of
true nature. It is so integrated with them that there is no hint
of separation or even differentiation. Complete coemergence means
that the absolute so interpenetrates the field of the other dimensions
that we cannot differentiate it from them. If we look at it in
terms of its coemergence with the dimension of pure presence,
for example, we see that quintessence is presence and absence
undifferentiated from each other, clarity and emptiness undifferentiated
from each other, being and nonbeing absolutely undifferentiated
from each other. It is a clear medium, colorless and transparent,
yet it is totally black and mysterious… it is as if each
point of this expanse is so empty that it is absolute clarity,
a radiance. At the same time this radiance is not only light,
but also presence and being. Its ontological nature is so absolutely
absence that the absence glimmers with presence. In other words,
when true nature reaches the extreme of nonbeing it cannot be
differentiated from being. (Inner Journey Home, pg 436)

Quintessential dimension
From this place (the quintessential dimension) we experience
the world as luminous appearance, crystalline and rich with qualities,
but whose nature is the coemergence of clear presence and black
emptiness. It is a jeweled universe, glittering and radiant, but
the jeweled forms are formations that the luminous emptiness assumes.
More precisely, the universe is nothing but self-luminous emptiness,
where this self-luminosity assumes the forms of manifestation.
It is as if the empty vastness, which is simply total absence,
differentiates itself into the forms of the world by its own self-radiance.
The glowing radiance is not only at the surface, but pervades
the vast emptiness. The radiance is awareness, but is felt also
as pure presence. (Inner Journey Home, pg 436)