There is a dualistic quality to nature, but it only exists by the perspective of being within nature. Think of day and night. There would seem to be an equal duality between the heat and light of day and the dark, cool night. But if you abstract from the planet into the realm of space, you will see that light from the sun, the source of day, is everywhere. Night, on the otherhand is huddling in fear on the back of the planet itself; a mere shadow.
Therefore, though it seems there is a duality of light and dark all around us, darkness is merely an abstraction of light-- a lack of it. Darkness is merely the negative space and light is the substance the reality. The brightest lights