A person has only one soul in their lifetime.
The soul does not change;
It does not fade,
It does not shine.
However, its world does.

The environment the soul lives in
Is it's body's heart and mind.
Fed by the heart.
Tainted by the mind.
Surrounded by the mind's light.
Surrounded by the heart's warmth.
Naught else can it sense.

Without one, the others flail.
Without the heart, they wander tiredly.
Without the mind, they flutter aimlessly.
Without the soul, they cease to exist.
No base.
No character.

People don't change,
As their soul remains constant.