Yin and Yang

The law of life says,

One can always do right
Even when there’s no hope in sight
There is never total darkness
As there is never total light

I wonder if this is true?

The world is of many years, varied, and of unknown origin.
It sustains much life, animals, plants, and humans
Who fight so fiercely the world is to its limit.
They are the main ones who cause the chaos
Through the mountains, then valleys,
Rivers, streams, to the city,
The Big City, where people fight,
Some good, some bad, but all frightening.

It is not easy to see the good in a murder
No matter your age. But there is always good
In everything, everyone, the yin and the yang
Evil in good, good in evil – together – good, evil, reside in all
(In the heroes, too.) All, true?

They make trouble, fix trouble, and control our instinct.
It inputs suggestions, ideas, hopes, and dreams.
It suggests whether to help on Christmas,
Or to hurt for your own beneficial gain.
I guess race doesn’t change how much good or evil
Is in a person, nor gender. One thinks,
So they, the Saint, good as one can be?
They are holy. They have no evil within.
Yet they do.
Just like you, serial killer.
You are evil—
Yet one like him, he is one like you.
That’s the law of life.
Perhaps you shall deny the goodness within
As the holy man may deny the fault.
But all are, that’s true.
They grow from acceptance of fault
Although it brings them down – and sometimes out,
Good and evil always dwell within.

This is my belief of Yang and Yin.