When we dream, we access reservoirs of impossible memories. How so? Easily. Realize: "magic" (embedded within "imagination") appears to literally be the force behind creation itself. (Look no further than the Uncertainty Principle for proof of this.) Most of us forget there are four possible known states of matter (not just the three typical states of solid, liquid, and gas). The fourth known state is plasma (lightning itself is a form of it). My point? To remind you to realize that the entire universe--every galaxy, fusioning star, planetary system, ecological niche, asteroid, mineral, protein, bacteria, molecule, and atom--is inherently connected to each other in a single tapestry. The complete "Big Picture" of our existence should be understood as a "singularity", that is, something which may best be described as having the quality of "Oneness." Anyone reading this should already know by now that there appears to be more "empty space" in between the molecules which make up everything in existence than the amount of matter itself.
So how does all this relate to dreaming? Let's stop the busy pace of our routines for a moment and take a look around us. Everything we see, hear, smell, taste, touch, and feel exists in a universe which somehow dreamed us up out of oblivion and in return we ourselves dream of absolutely anything imagineable while we've lapsed back into unconsciousness during sleep. This "little sleep" we experience nightly appears to be a fractal of the "bigger sleep" we all must face, death itself. And so it goes. Death being the gateway (the "omega" to our birth's "alpha") through which this cyclical process continues endlessly as we are each individually restored to "Ground Zero" (the interminable period directly after the "Big Bang" and prior to the formation of stars). Thus matter itself appears to be eternally recycled through this universal process, and here we are today, with only one thing left to do. Dream harder.