The Map of Existence -- Internal Energy (chapters 1-48)
Ten Hidden Sefirot (chapters 18-28)
Ayin Beis Volume 1, Discourse 5, Chapter 19, p. 29-30
The ten hidden sefirot (before the tzimtzum) are not in any way a defined independent state, rather they are completely submerged and encompassed in the source, and as such do not have any distinction and do not add any multiplicity. In truth this paradox (ten sefirot, which include opposites like love and severity, water and fire, and yet they are all united as one) is beyond our comprehension. We can only intuit their unity. Yet, we do have some examples that help us relate to this idea on our terms:
1) The essential elements of, say, fire and water, as they stand in their essential source, can dwell together because in the archetypal quintessence they do not have tangible form. Only when they extend and express themselves do they assume form, which does not allow these two opposites to reside side by side.
2) An abstract concept can contain two opposite interpretations, which dwell together in the teacher's mind. Only after the idea manifests in the containers of the student do they take on shape and form which contradicts the opposing opinion.
3) Human faculties in the soul are in an ethereal and subtle state, with no tangible form, and can therefore reside side by side with other even contradictory faculties. Only after these faculties manifest in their respective organs and containers do they take on shape, with each faculty defined by its unique personality.
Concepts: Ten Hidden Sefirot
Analysis: We can learn volumes from the Rebbe Rashab's words, that the paradox of the "ten hidden sefirot" is "in truth beyond our comprehension. But we can sense and feel with our intuitive intelligence their unity." (And then later "that this is based on our understanding and comprehension of the paradox of fire and water only in terms of hot and cold, and thus negate that from the essential state of these entities").
Firstly, this answers a fundamental question: Since the "ten hidden sefirot" are on the pre-tzimtzum level, how can we possibly have any comprehension of them and their state of being? The total concealment of the tzimtzum was necessary for our independent consciousness to emerge; should even the smallest glimmer of pre-tzimtzum consciousness have remained, existence as we know it could never have taken hold. So how can we in any way relate to the pre-tzimtzum ten hidden sefirot?
By qualifying the issue with stating that this state of being is "in truth beyond our comprehension" it is clear that we cannot in any rational way understand this type of all encompassing and omnipresent unity. "Yet, with can sense and feel with our intuitive intelligence their unity,"1) through extrapolation, i.e. process of elimination, 2) because the kav, after all, is a ray of light that originated in the ten hidden sefirot of pre-tzimztzum consciousness and (after the tzimtzum) "returned and radiated" a glimmer of this pre-tzimztzum consciousness into post-tzimtzum consciousness, 3) As explained earlier, once the tzimtzum allowed for the containers to emerge, now they can begin integrating the transcendent energy, and as they continue to be refined and expand, they can ultimately integrate even pre-tzimtzum consciouness, via the kav.