“As, in music, two different sounds may be in accord… so there is rapport between medium and ‘control’ when their astral molecules move in accord.”
— The Mahatma Letters to A. P. Sinnett, Letter 16
Series: Paths of Spiritual Development
Many of us come to theosophical study after having been involved with some religion or doctrine. Many of these traditions address, directly or indirectly, the topic of mediumship — or at least have well-defined opinions about it. This gives us an apparent familiarity with the concept, but can generate significant confusion when trying to transpose these understandings to the theosophical context.
The aim here is not to reconcile divergent views, but rather to establish a conceptual foundation coherent with theosophical teachings, offering clear parameters for reflection and discernment.
What is mediumship?
According to Leadbeater, in Life After Death:
“One of the characteristics of the medium is the ease with which his vehicles separate, and because of this he can and even wishes to lend his body for temporary use by another, when requested.”
In other words, mediumship involves the capacity to temporarily yield subtle vehicles for use by another consciousness. It is important to note that abilities such as clairvoyance or clairaudience are not, strictly speaking, mediumistic — they involve direct perception and not the yielding of vehicles.
Materializations and use of the etheric double
Arthur Powell, in The Etheric Double, is incisive in classifying this form of mediumship as a malfunction of the subtle bodies:
“Mediumship is, in short, dangerous and, fortunately, relatively rare; it causes great strain and disturbance to the nervous system. […] The partial withdrawal of the double is sufficient to leave the dense body in lethargic sleep […] this dangerous state is followed by extreme exhaustion.”
Since the etheric double distributes prana (vital energy) to the physical body, its partial or total withdrawal compromises the vitality of the organism. Leadbeater reports that in materialization séances, the medium can lose up to 10kg of mass, transferred energetically to the materialized form.
When recurrent, this process severely compromises the medium’s health — and any damage to the materialized form directly affects their physical body.
Powell also warns us that involvement in a séance of this nature is not limited to the medium, but possibly (and unconsciously) also includes the audience. Therefore, it is common for attendees to feel exhausted after a session. These phenomena, though fascinating, impose a collective energetic cost.
Other phenomena (such as production of sounds, movement of objects, etc.) are caused by the materialization of a form (which is not necessarily visible), and by the production of physical effects through it, and therefore have a very similar mechanism.
Spirit guides and post-mortem entities
Powell also observes that “the majority of spirit guides take all precautions to protect the medium.” This leads us to the inevitable question: who are these spirit guides?
To understand this question in the light of theosophy, we must begin with what happens to the human being after physical death.
What happens after death according to Blavatsky?
In The Key to Theosophy, Blavatsky describes with precision the process of disintegration of human principles after death. According to her:
“When a man dies, his three lower principles — the physical body, prana (or life principle) and the vehicle of this, which she calls the ‘astral body’ (equivalent to the etheric double in later terminology) — abandon the being definitively.”
What remains is a set of four principles that temporarily remain united in kama-loka, an intermediate astral plane:
- Kama-rupa (the soul of desires)
- The lower part of Manas (concrete mind, linked to the personality)
- And the superior triad (Atma-Buddhi-higher Manas), which has not yet completely detached.
This intermediate state is known as the “limbo” of theology or the “Hades” of mythology. It is not a physical location, but rather a subjective space, beyond sensory perception.
According to Blavatsky:
“The astral eidolons of all beings — including animals — await there the so-called ‘second death’. For animals, this occurs with the final disintegration of the astral body. For humans, it occurs when the superior triad finally detaches from the remnants of the personality and enters the devachanic state.”
This residual kama-rupa, without the influx of higher Manas and without a physical brain to express itself, collapses — becoming a “ghost” or “shell” (residual astral form devoid of consciousness) —, deprived of real identity and discernment.
Blavatsky reinforces that what appears in mediumistic séances is not the “spirit” of the person, but the animated reflection of their past personality, already disconnected from the higher consciousness.
When there is contact with the individuality
Despite reinforcing that what manifests in mediumistic séances is, in most cases, only a residual reflection of the personality (without the Higher Self), Blavatsky recognizes two important exceptions in which there may still be contact with the true individuality — that is, with the being still linked to its Ego:
Yes, there is one case, and even two exceptions to this rule. The first is during the few days immediately following a person’s death, and before the Ego passes into the devachanic state. […] Except for some exceptional cases in which the intensity of the deceased’s desire to return for some specific purpose forced the higher consciousness to remain awake and, therefore, the “spirit” that communicated was indeed the individuality. The spirit is dazed after death, and falls very early into what we call “pre-devachanic unconsciousness.”
In other words, there is a very brief window after physical death in which the still conscious (and integral) being manifests for a specific reason — normally linked to a strong commitment, unfulfilled duty, or intense love. However, this contact is neither simple nor common: in most cases, the recently disembodied spirit soon plunges into pre-devachanic unconsciousness, where ties with the physical plane dissolve.
From the moment the spirit plunges into this state of unconsciousness, the process of detachment from the last bonds with the previous incarnation begins. This state acts as a bridge leading to devachan — the plane of conscious rest between incarnations, where the soul reunites with everything it loved and desired in pure form.
When it reaches devachan, the spirit no longer communicates with those who are incarnated. The devachanic state for the ordinary human being is basically a dream state. The one in devachan lives the intermediate cycle between two incarnations surrounded by everything they had desired, and by all those they loved on Earth. The devachanic state is an absolute forgetting of everything that caused pain or sorrow in the previous incarnation.
The second exception mentioned by Blavatsky concerns the Nirmanakaya — spiritual Adepts who, even having earned the right to nirvana (the supreme cyclic rest), choose to remain connected to humanity, silently guiding it.
These beings, out of compassion and sense of mission, refuse devachan and nirvana to continue working on the inner planes. They can enter into contact with disciples and aspirants, but never through common mediumship. Their work occurs in subtle form, generally through inner inspiration, intuition or through initiatic channels.
Although these exceptions demonstrate that contact with the true individuality is possible in rare and well-defined circumstances, it is essential that we do not take any spiritual manifestation as being elevated by nature. The astral plane is full of thought-forms, astral shells and entities of various origins — and many of them are capable of presenting themselves with convincing appearance and discourse.
True contact with higher consciousness, when it occurs, tends to be silent, transformative and subtle, not sensationalist or theatrical. Therefore, prudence and discernment must always guide any involvement with the invisible, especially when mediated by external phenomena.
Leadbeater: A more positive view
While Blavatsky maintained a more restricted view on the possibility of conscious contacts after death, Leadbeater, from his direct experience, presented a more open perspective. He believed:
- That the astral plane and devachan can offer learning experiences after death.
- That it is possible for the medium to rise to devachan to contact an entity, and then report this experience on the physical plane.
However, such a feat requires full consciousness on the mental plane — a condition accessible only to Adepts or very advanced aspirants.
Blavatsky herself recognized this possibility, but made a crucial caveat: perception in devachan is profoundly subjective and cannot be considered a reliable source of objective information.
Both she and Leadbeater highlighted the risks involved in contact with entities from subtle planes — especially on the astral plane, where illusion and truth can easily be confused.
Risks and Deceptive Entities
Leadbeater was emphatic in stating that it is extremely difficult to discern the real nature of an entity that manifests on the astral plane. Even when it seems familiar or provides convincing information, this is no guarantee of authenticity.
On the astral plane, we find a diversity of entities:
- Disembodied humans, at different post-mortem stages.
- Conscious or automatic thought-forms, also called shells.
- Vitalized shells — astral remains devoid of their own consciousness, animated by elementals (always with deleterious effect).
- Independent astral entities, which can simulate human personalities with great precision.
In the book The Astral Plane, Leadbeater writes:
“Frequently, the manifesting ‘spirit’ is exactly what it declares itself to be, but it is also frequently nothing of the kind, and the ordinary attendee has no means of distinguishing the true from the false.”
He emphasizes that even highly specific and convincing manifestations can be fraudulent:
- The entity can read data from the consultant’s mind.
- It can access the so-called astral light, where images and memories of the past are recorded.
- It can transmit true information, without this guaranteeing that it is the person it claims to be.
“Even if the manifestant tells something related to a deceased brother, but unknown to the consultant and later verified as true, doubt persists: this could have been accessed in the astral records. What manifests may be only the shadow or debris of the person — bearing memories, but not actually being them.”
These possibilities make spiritual communications especially vulnerable to self-delusion, emotional projection and influence from entities with other interests.
Additional recommendation
To deepen understanding of astral entities (their capabilities, limitations and modes of action), consult The Astral Body, by Arthur Powell, which synthesizes various classical authors.
Mediumistic development and the atomic web
In the field of practices common in spiritualist currents, we find the so-called “development of the medium” — a topic that requires special attention. To understand it in the light of theosophy, we need to understand what Arthur Powell describes as the atomic web — a vital energetic filter, addressed in the book The Etheric Double.
According to Powell:
“Between the chakras of the astral body and those of the etheric double there exists a subtle structure, formed by a single layer of densely compacted physical atoms, permeated by a special form of prana. This web functions as a protective filter between the astral and physical planes.”
Its role is fundamental:
- It allows the passage of vital energy (prana) to the physical body.
- It blocks dense astral forces, protecting the physical consciousness.
- It acts as a natural protective barrier between the planes.
The atomic web functions as a vibrational membrane between the planes, regulating energetic exchange without compromising the protection of the physical body.
The risk of forced “development”
In mediumistic development sessions, the objective is usually to deliberately weaken the atomic web, especially at points such as the solar plexus or frontal chakra.
This weakening can allow more direct communication with spiritual entities, but compromises the energetic integrity of the medium — and, more seriously, without any guarantee about the origin or quality of the entities accessed.
The atomic web is not selective. When weakened, the medium becomes vulnerable to both mentors and obsessors, wandering thought-forms and low-vibration astral entities.
Even in serious groups, where spiritual mentors try to minimize damage, it is still a violation of a protective mechanism. From that point on, the energetic balance of the medium depends on constant vigilance or external interventions.
The theosophical alternative: progressive purification
Theosophy proposes another path: not to weaken natural barriers, but rather to elevate the subtle bodies until they can function at more refined levels.
“As the consciousness of the ordinary man cannot normally employ pure atomic matter, both physical and astral, there is no possibility of conscious communication between the two planes. However, as he purifies his vehicles, he becomes capable of acting in atomic matter and then will be able to transport his consciousness directly from one atomic level to another. Thus, consciousness can transit between planes without breaking natural protection.” (Powell, The Etheric Double)
In this model:
- The atomic web remains intact, fulfilling its protective function.
- Communication with higher planes occurs through frequency elevation, not through indiscriminate opening of channels.
- The medium (or aspirant) maintains conscious control of the process, with minimal risk.
This process demands patience, ethics and self-awareness, but results in clearer, more stable and safer perception.
And when the web is already damaged?
If the atomic web has already been compromised, the path is that of vibrational re-education:
- Constant vigilance over one’s own thoughts, emotions and desires.
- Energetic protection practices, such as:
- Visualizing a brilliant light in greenish-pink tones, radiating from the solar plexus and forming a protective cape around the body.
- Building mental shields and protective shells, as described in The Etheric Double.
Above all, it is essential to establish a relationship of responsibility with any psychic faculty that manifests. Sensitivity without discernment is fertile ground for illusions and imbalances.
Conclusion
The theosophical approach to mediumship requires profound discernment and continuous self-knowledge. What other traditions see as a gift or achievement, theosophy frequently interprets as a sign of risk or premature opening.
The theosophical path privileges natural internal development: psychic faculties awaken as a consequence, never as a goal. The focus is on perfection of the bodies and expansion of consciousness. When these faculties arise, they can then be used with wisdom and higher purpose.
This article is a panoramic introduction. Specific psychic abilities — telepathy, clairvoyance, symbolic vision — will be addressed in future texts.
This study can serve as a starting point for a more conscious approach to mediumship — not as a goal in itself, but as a natural consequence of the inner path.
Series: Paths of Spiritual Development
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