If we understand by making comparisons--life/death, good/bad, love/hate--in order to progress, then we see in opposites.
If we understand by accepting--not favoring one to the other--in a
state of let-go--in order to celebrate!, then we see in complementaries.
Perhaps it is the darkness found within our minds which allows us to perceive light, and the emptiness within which creates the fullness without.
Those who choose knowledge remain blind of their ignorance.
Those who accept their ignorance become aware of understanding--as if they never stop expanding or growing.
If our shadows from 3 dimensional objects exist in a 2 dimensional reality, then perhaps what we perceive as our bodies are the shadow(reflections) of the 4th dimension--time or eternity.
It's as if we are a part of one being, but not apart from one being.
To experience the source is to stand-under all(everything/nothing).