What is a dream?

My friend Adam Eliyahu Feelz mentioned the matter of a dream, concerned that they remain as a distant and unactualized portion of our being.

There are few communal dreams, though casting off the yoke of an oppressor might yet be largely shared. Oracles and interpreters, oneiromancers, assisted in their understanding, and many a prophet is said to have attained prophecy only while in an unconscious state.

Why is this? What is a dream?
In reading prophecy we are shown a nature of reality as it is not yet - that is just around the corner, always - a better world. In dreaming, there is a dissolution of self, an upspringing of seeds watered, the vision of plants breathing fresher air.

The conditioned mind taking waking consciousness as the only true reality - but this mind is as yet unawakened to the imagination, and the play-work of bringing reality to fantasy.
In waking, from dreams of shaking off the dust and chains of our oppressors and rising, the waking-consciousness instates imagined impositions of impossibility over the fields of reality, limiting and denying the fulfillment of liberation. This waking-state, however, is as yet unconscious of its own self being a dismemberer and slayer of dreams, of the greater world that already is but it chooses not to see.

It is only right that dreams occur in fits and starts, enrollment at the Collage of Discontinuous Jumbles, multiple REM states - the subterranean flows, the thawing of numb and concretized monoliths.