Before we proceed, one clarification is needed, and it will hold up the whole argument that follows. Creation has two sides that must never be confused. One is Essence, the world of order and matter, where the formal levels of consciousness also belong, the triadic structure of spirit, soul, and matter that repeats, unchanged, at every scale. The other is, Hyperessence where the Divine Spark dwells, something of an entirely different order, which is not form but motion. While the form stays the same, the Spark travels within it. It is the same distinction that explains why individuality dissolves in death while the I AM does not. Form belongs to Essence and ends with it, the Spark belongs elsewhere and continues. This distinction explains, almost by itself, everything that follows.

After that, I begin with the simplest question, whether there is a finite number of Divine Sparks that incarnate. This question, legitimate as an impulse, is misguided as a formulation. Behind it often hides a fear not easily admitted, the suspicion that if the Sparks are countless, then our own is just one more, disposable within the multitude. The answer is no, and the reason is not a promise of comfort but a consequence of the very distinction just laid out. Number is a category of Essence, it counts shapes, vessels, formal levels. Hyperessence does not operate by number, it operates by quality, and the change that lives there is not quantitative but qualitative.
The mathematician Georg Cantor, without knowing it, gave a tool for exactly this distinction when he proved that infinity is not one thing, but that infinities of different orders exist. The infinity of the natural numbers is not the same infinity as that of the real numbers, even though both are, in their own way, inexhaustible. If, then, abstract logic itself accepts that “infinity” is not a homogeneous heap, then the question about the number of Sparks asks with the wrong tool, it asks Hyperessence in the terms of Essence. If a number is truly hidden anywhere, it will be found in the formal levels, in the structures that house the Sparks, not in the Sparks themselves.

But what happens when a Spiritual Collectivity is completed? Every such Collectivity, like every human being, carries the two levels together, a formal structure of its own, triadic at its own level, which belongs to Essence, though perhaps of a different texture, and a Divine Spark of its own, which belongs to Hyperessence, and from which our own Sparks are an outflow.
The formal structure never changes, it repeats unchanged at every scale, something fractal geometry has already shown in nature, a shape like the coastline or the Mandelbrot set, which keeps the same structure whether you view it from a distance or magnify it a thousand times, because the law that generates it does not change with scale. But this concerns only the form. The Spark does not stay still within it.
When the Collectivity is completed, it is not its form that changes, it is its own Spark that, having gathered what all the Sparks that flowed from it and returned gave it, now acquires an ontological identity of individuality at the next level. Form is the staircase, the same on every floor. The Spark is the one that climbs.

But if the Spark keeps climbing like this, and given that human beings will exist across the ages on countless planets of Creation, will there forever be Collectivities at every level of consciousness? Theoretically, yes, but not because something symmetrical rises and descends at the same time, as one might hastily assume. What rises is completed Divine Sparks, those that managed to crystallize something. What descends is primal divine idea, still unworked, and it descends precisely to gain the supreme knowledge that only descent can offer.
It is not the same thing moving in two directions, it is two entirely different phases of a single process, something analogous to what happens in a metallurgical furnace. The raw ore goes down into the fire unshaped, and the crystallized metal comes out the other side pure, formed, ready. No one expects one to resemble the other, yet as long as the furnace is fed, the two phases continue together, inseparable.
The exact same thing happens on the scale of consciousness, as long as there is a primal idea descending to be tested, there will be, with the same necessity, a completed Spark ascending, having already been tested. The descending Spark does not diminish anyone’s uniqueness, it is simply placed within a current that was not built to have a final link.

The heaviest question remains, whether this cycle has an end. We have granted that there is a beginning, so logic demands we also accept an end, but here a correction of terms is needed, because in reality we never actually saw a beginning. We saw the moment we became aware of the onset of an expansion, and that is a different thing.
An expansion has, as its inverse, a contraction, but contraction is not an end, it is an inhalation that follows the exhalation, so that a new exhalation can begin right after. This is the well-known breath of Brahma, and its physics corresponds, in the strict sense, only to Essence, to the cosmogony of matter.
Modern cosmology revisits it under another name, in oscillating universe models, where a Big Bang is followed by a Big Crunch, which in turn gives birth to a new expansion. It proves nothing about Hyperessence, but it shows the same rhythm at a different level, the rhythm that the inner metaphysical tradition suspected long before physics calculated it. What looks like an end, from our position inside the cycle, is simply the moment the breath changes direction.
Physics stops here earlier than it should, it describes the rhythm with precision, but refuses to ask why there is rhythm and not silence, leaving the question to philosophy, exactly where it always belonged, because the universe, in these models, has no end, it has rhythm. What looks like an end, from our position inside the cycle, is simply the moment the breath changes direction.

We began by asking how many, and we end up finding that the question was always wrongly formulated, because it demanded a number from something that does not belong to Essence. There is no number of Sparks, nor an end worth fearing.
There is form that stays the same at every scale, and Spark that travels within it, sometimes ascending completed, sometimes descending primal, in a rhythm that does not need to be measured to be understood, it only needs to be recognized. And whoever recognizes the difference between the two no longer needs to ask how many others are like him, because he has understood at which of the two levels his own uniqueness truly lies.