Thoughts on Duality

The Yin-yang. A symbol common to oriental culture. It shows the unity of opposites. How one thing cannot exist without the other. Two opposing forces complete each other, need each other to exist. Yet despite their need of each other, are still opposed to the other.
Forever opposed yet forever united.
One could think of it as a controlled chaos of a sort. A conflicting dance between two people, yet while there is this chaos, there is a lively party and on the whole, an orderliness.
This description may be a bit confusing but if you look at it from the right perspective it makes sense.
Speaking of perspectives, I think its time for me to offer one of mine.
The Yin-yang operates on a theory of balance. In pure nature this works perfectly as nature always tries to maintain a cyclical balance. For everything there is a season, a time to live, a time to die.
As human beings though, we have a tendency to knock things out of whack. There are those of us with some balance of these forces, there are some of us with complete balance and there are those of us who are completely unbalanced. For sentience gives rise to the possibility of evil. Which in turn gives rise to people capable of doing evil purely for the sake of evil. Maybe the converse is true as well but that is a debate for another time.
Because where humans are concerned, the Yin-yang is not a fixed drawing. It ebbs and flows, stays static and chaotic. For very few people does the Yin-yang stay the same but still those people do exist.
In conclusion, in human nature duality is both fixed and flowing. It can be still as a statue or flowing like the aurora.