When we speak of the primary source, the foundation of that ineffable presence that is the soul, we can say that all souls emanate from a single point.
All souls are like reflections of one source of light on different objects.
While each soul is a singularity unto itself, the light of the primary source exists within it, too.
We could say, then, that all souls come from the same source, all souls have the same value, and all souls exist on the same level.
However, when souls descend to the world from this primordial source, and even more so when they become manifest in the reality of our world – in other words, when they come to dwell in human bodies – they are no longer equal.
What is more, no two souls are identical.
Every soul is unique.
Each soul has its own essence and character that is different from those of any other soul.
–Rabbi Adin Steinsaltz