The yin and the yang explains everything.
Yin and Yang are dependent opposing forces that flow in a natural cycle, always seeking balance.
Though they are opposing, they are not in opposition to one another.
As part of the Tao, they are merely two aspects of a single reality.
Each contains the seed of the other, which is why we see a black spot of Yin in the white Yang and vice versa.
They do not merely replace each other but actually become each other through the constant flow of the universe.
A now deceased friend “Reality Zone” said this about the yin/yang:
Yes they are dependent.
Not independent.
This is where balance enters, and exits.
We can not fool mother nature.
We can only fool ourselves.
As long as we fight the natural cycle, and stay out of balance.
We will be the eternal fools of the universe.
Since today is April Fools Day, I’ll leave you with that thought.
One Seeker's Story 