The Practice of Psychotherapy by Jung: Transference, the Rosarium & the Alchemical Vessel (CW Volume 16)

What Is The Practice of Psychotherapy?

The Practice of Psychotherapy is Volume 16 of the Collected Works of C.G. Jung, published in 1954 in its definitive form. The book collects essays on clinical technique written between 1929 and 1951, but its real weight lies in a single extended work: "The Psychology of the Transference," originally published in German in 1946 as Die Psychologie der Ubertragung.

The volume is divided into two parts. Part One, "General Problems of Psychotherapy," contains shorter essays on topics like the aims of therapy, the principles of practical psychotherapy, and the problem of abreaction (emotional discharge). Part Two, "Specific Problems of Psychotherapy," contains the transference study and essays on dream analysis. But the transference work dominates the book both in length and in intellectual ambition. It represents Jung's most sustained attempt to bridge his alchemical research and his clinical practice.

The context of the transference study matters. By 1946, Jung had been studying alchemy for twenty years. He had published Psychology and Alchemy (CW 12) and was preparing Mysterium Coniunctionis (CW 14). His understanding of alchemical symbolism was extensive. But he was also an active clinician who had spent decades observing the emotional dynamics of the therapeutic relationship. The Psychology of the Transference brings these two streams of knowledge together, using the language of alchemy to describe what happens between two people in a room when one agrees to reveal the contents of their psyche to the other.

Jung chose the Rosarium Philosophorum (Rosary of the Philosophers), a 16th-century alchemical text, as the framework for his analysis. The Rosarium contains a series of ten woodcut illustrations depicting the meeting, union, death, and rebirth of a King and Queen. Jung recognised in these images an exact parallel to the stages of therapeutic transference, from the initial rapport between analyst and patient through the deepening of the relationship, the crisis of psychological dissolution, and the eventual emergence of a new psychological configuration.

The Psychology of the Transference

Transference is the phenomenon in which a patient unconsciously projects inner psychological figures onto the therapist. A female patient may see in her male analyst not the actual person sitting across from her but a version of her father, her animus, or an archetypal authority figure. A male patient may project his anima onto a female analyst, experiencing her not as a professional but as an object of romantic fascination or maternal comfort.

Freud had identified transference early in the history of psychoanalysis and regarded it as both a complication and a tool. The patient's projections onto the analyst revealed the patterns established in childhood, and by analysing the transference, the analyst could help the patient see how these patterns distorted current relationships. The goal was to dissolve the transference: to help the patient see the analyst as a real person rather than a screen for projections.

Jung's view was fundamentally different. He regarded transference not merely as a repetition of childhood patterns but as a manifestation of the collective unconscious operating through the therapeutic relationship. The projections that arise in therapy are not just personal (derived from the patient's history with mother and father) but also archetypal (reflecting universal patterns of relationship between masculine and feminine, conscious and unconscious, ego and Self).

This means that transference cannot simply be "analysed away." The archetypal dimension persists even after personal projections have been identified and withdrawn. What remains is a genuine encounter between two psyches, a meeting that has the potential to transform both parties. Jung compared this encounter to the alchemical process in which two substances are placed in a sealed vessel and subjected to heat: both are changed, and what emerges is neither the original substance nor the other, but something new.

The Ten Images of the Rosarium

The Rosarium Philosophorum contains ten woodcut illustrations that Jung used as the scaffolding for his analysis of transference. Each image depicts a stage in the relationship between the King (Sol, the Sun, masculine consciousness) and the Queen (Luna, the Moon, feminine unconscious). Jung interpreted these figures as representing the analyst and patient, the conscious mind and the unconscious, or more precisely, the four-way interaction of conscious and unconscious in both parties simultaneously.

Jung was clear that the relationship is not simply two-person. In any therapeutic encounter, there are actually four psychic entities at play: the analyst's conscious mind, the analyst's unconscious, the patient's conscious mind, and the patient's unconscious. The transference involves cross-connections between all four. The patient's unconscious speaks to the analyst's unconscious. The analyst's consciousness interacts with the patient's unconscious. The complexity of these interactions is what makes transference so difficult to analyse and so powerful as a vehicle for change.

The Rosarium images gave Jung a way to track these interactions through their characteristic stages. The sequence is not arbitrary; it follows the logic of alchemical transformation, which Jung believed also described the logic of psychological change. Each stage must be completed before the next can begin, and attempts to skip stages or rush the process result in failure, both in the laboratory and in the consulting room.

The Mercurial Fountain and First Meeting

The first image of the Rosarium depicts the Mercurial Fountain, a symbol of the prima materia from which all transformation begins. Four streams flow from the fountain, representing the four elements (earth, water, air, fire), which merge into a fifth entity, the quinta essentia. Jung interpreted this as the starting condition of therapy: the undifferentiated psychic material that both analyst and patient bring to their first meeting.

The second image shows the King and Queen meeting, each reaching toward the other with their left hands while holding symbolic objects in their right. Jung noted that the left hand traditionally represents the unconscious side, the sinister (from the Latin for "left"). The meeting is not merely social but already involves an unconscious connection. From the very first session, analyst and patient are linked at a level deeper than their conscious rapport.

The third image depicts the "Naked Truth": King and Queen have removed their clothing. Jung read this as the stripping away of personas. In therapy, the patient must gradually reveal what lies beneath social masks, professional identities, and defensive presentations. The analyst, too, must set aside the persona of professional authority and meet the patient with some degree of personal authenticity. This mutual vulnerability is frightening but necessary. Without it, the therapeutic vessel cannot be sealed, and transformation cannot begin.

The fourth image shows the immersion in the bath. King and Queen stand together in water, a symbol of the unconscious. This represents the stage of therapy in which both parties are "immersed" in unconscious material. Dreams intensify. Emotions become more powerful. The boundary between analyst's and patient's psychology begins to blur. This is the stage that inexperienced therapists find most alarming, because it feels like losing control. But Jung insisted that this immersion is necessary: without entering the unconscious together, there is no material for transformation to work on.

The Conjunction: Union of Opposites

The fifth image depicts the coniunctio, the sexual union of King and Queen. This is the most controversial and psychologically charged image in the series. Jung was explicit that the image represents a psychological, not a physical, event. The union of Sol and Luna symbolises the moment when conscious and unconscious contents meet and merge in a way that is experienced as overwhelming, even annihilating.

In therapeutic terms, the coniunctio corresponds to the deepest point of transference, where the emotional connection between analyst and patient reaches its maximum intensity. The patient may experience powerful feelings of love, dependency, or fusion with the analyst. The analyst may experience corresponding emotions, which Jung called countertransference. Both parties feel that something has been revealed that cannot be unrevealed, that a threshold has been crossed.

Jung compared this experience to what the alchemists called the "chemical marriage," the union of sulphur and mercury, sun and moon, red king and white queen. The alchemists recognised that this union was both ecstatic and dangerous. The substances involved were destroyed in the process of merging, and what emerged was something entirely different from either original component. The same is true in therapy: the old psychological configurations of both analyst and patient begin to dissolve in the heat of their encounter.

The critical distinction Jung drew was between acting out the coniunctio literally (which would destroy the therapeutic relationship) and containing it symbolically (which allows transformation to occur). The alchemical vessel must hold. The boundaries of the therapeutic relationship, its regularity, its confidentiality, its professional structure, serve as the container that prevents the powerful emotions of the coniunctio from spilling out into destructive behaviour. When the vessel holds, transformation occurs. When it breaks, both parties are damaged.

Death, Dissolution, and Rebirth

The sixth image of the Rosarium shows death. The unified figure of King and Queen lies in a coffin or tomb, apparently lifeless. Jung interpreted this as the psychological death that follows the coniunctio: the old personality, the old ways of relating, the old defences must die before something new can be born. This is the most difficult stage of therapy, and the one most likely to cause a patient to terminate treatment prematurely.

The death is not metaphorical in the way that word is usually understood. Patients in this stage often experience genuine despair, meaninglessness, and a sense that their previous identity has been destroyed without anything to replace it. Jung compared it to the alchemical nigredo, the blackening that represents the first stage of the opus: everything valuable seems to have been reduced to ash. The analyst's task during this period is simply to be present, to hold the vessel steady, and to trust that the process has its own intelligence.

The seventh image shows the ascent of the soul: a small figure rises from the dead body toward heaven. Jung read this as the separation of spirit from matter, consciousness from its identification with old patterns. Something in the patient has been freed from its previous imprisonment in rigid ego structures. This "soul" is not yet integrated; it is floating free, unattached to any new form. The patient may experience this as a strange lightness, a sense of being between worlds, neither the old self nor yet a new one.

The eighth image depicts purification or ablution: the dead body is washed with celestial dew. This corresponds to the gradual clarification that follows the crisis. New insights emerge. Old conflicts look different in retrospect. The patient begins to see patterns in their life that were invisible before. The washing represents the slow, patient work of making sense of what has happened, of finding meaning in the dissolution.

The ninth image shows the return of the soul to the purified body. The floating figure descends back into the form below. Jung interpreted this as the re-integration of consciousness with a renewed personality structure. The insights gained during the period of dissolution are now incorporated into a new way of being. The patient begins to function again, but differently than before.

The tenth and final image depicts the rebis (from res bina, the "double thing"): a single figure standing on a crescent moon, combining masculine and feminine features, crowned and holding the symbols of wholeness. This is the product of the opus, the goal of the alchemical work, and in psychological terms, it represents the new personality that emerges from successful individuation. The person is more integrated, more capable of holding opposites in tension, more connected to the unconscious without being overwhelmed by it.

The Alchemical Vessel in Clinical Practice

Jung's metaphor of the alchemical vessel (vas hermeticum) became one of the most influential ideas in psychoanalytic thought. The vessel is the therapeutic relationship itself: the regular appointments, the consistent setting, the confidentiality, the payment structure, the ethical boundaries. All of these create a contained space in which powerful psychological material can be safely processed.

The vessel must be sealed. This means that what happens in therapy stays in therapy. It also means that the relationship has clear boundaries: it occurs at specific times, in a specific place, under specific conditions. These boundaries are not arbitrary restrictions; they are what allow the "heat" of the emotional encounter to build to the point where transformation becomes possible. Without containment, the energy dissipates. Without boundaries, the relationship becomes chaotic rather than therapeutic.

The vessel must also be heated. Jung was critical of therapeutic approaches that maintained too much emotional distance. A therapist who sits behind the patient, speaks rarely, and reveals nothing of their own humanity does not create sufficient heat for the alchemical process. Jung preferred face-to-face engagement, emotional responsiveness, and a willingness to be genuinely present. The analyst must be affected by the patient's material, must feel the weight of it, or nothing real can happen.

But the vessel must not break. The most dangerous moment in therapy is when the intensity of the transference threatens to destroy the containing structure. This can happen through boundary violations (the analyst and patient becoming romantically involved, for example), through premature termination (the patient fleeing from the intensity), or through the analyst's inability to contain their own countertransference (becoming punitive, dismissive, or seductive in response to the patient's projections). Jung regarded boundary maintenance as a skill that required continuous self-examination on the analyst's part.

Dream Analysis and Other Essays

While the transference study dominates Volume 16, the shorter essays on clinical technique are also valuable. Jung's essays on dream analysis present his distinctive approach: dreams are not disguised wish-fulfilments (as Freud argued) but direct communications from the unconscious that should be taken at face value. A dream about drowning is about drowning, about being overwhelmed by unconscious content. A dream about flying is about inflation, about losing contact with the ground of ordinary reality.

Jung recommended working with dream series rather than individual dreams. A single dream can be interpreted in many ways, but a series of twenty or thirty dreams reveals patterns that constrain interpretation and point toward the direction of individuation. The unconscious is telling a story over time, and the analyst's task is to follow the narrative thread rather than impose meaning on isolated episodes.

The essay on the aims of psychotherapy is worth special attention. Jung argues that therapy has different goals at different stages of life. For young people, the primary task is adaptation: developing a functional persona, establishing career and relationships, building ego strength. For people in the second half of life (roughly after age 35-40), the task shifts to individuation: turning inward, confronting the unlived aspects of personality, and developing a relationship with the Self. Applying the wrong therapeutic approach to the wrong life stage is a common clinical error.

Jung also discusses the problem of the "difficult" or "impossible" patient, the person who resists therapeutic engagement, who defeats every intervention, who seems to make the analyst feel helpless by design. Jung's approach to these patients was characteristically honest: sometimes the analyst is the wrong analyst for this particular patient. Sometimes the patient's resistance is wiser than the analyst's technique. And sometimes the only honest response is to acknowledge that therapy has reached its limit and that further growth must come from the patient's own resources.

Mutual Transformation: Analyst and Patient

One of Jung's most distinctive contributions to therapeutic theory is his insistence that the analyst is changed by the work. This idea, obvious as it may seem, was controversial in his time and remains so in some quarters. The classical psychoanalytic model maintained that the analyst was a "blank screen" onto which the patient projected, and that the analyst's own psychology was irrelevant to the process (provided it had been adequately analysed in training).

Jung rejected this model completely. He argued that an analyst who remained unmoved by the patient's material was either insufficiently engaged or psychologically defended. The Rosarium images show both King and Queen being transformed, both entering the bath, both dying and being reborn. This was not just symbolic decoration; it reflected Jung's clinical observation that therapists who did deep work with patients found themselves changed by the encounter.

This does not mean that analyst and patient are equal in the relationship, or that the analyst should burden the patient with personal problems. The asymmetry of the therapeutic relationship, one person seeking help and the other offering it, remains intact. But within that asymmetry, both psyches are at work. The analyst's unconscious responds to the patient's unconscious. The analyst's complexes are activated by the patient's material. If the analyst is willing to work with these activations, to take them into their own analysis and self-reflection, the therapeutic encounter deepens. If not, the analyst becomes an obstacle to the patient's development.

Jung expressed this idea in a memorable formulation: the analyst can take the patient only as far as the analyst has gone. An analyst who has not confronted their own shadow cannot help a patient with shadow integration. An analyst who has not developed a relationship with the unconscious cannot facilitate the patient's individuation. The analyst's own psychological development is not a luxury or an ethical requirement; it is the instrument of the work itself.

How to Read This Volume

Start with "The Psychology of the Transference" if you are interested in alchemy, relationships, or depth psychology. It is Jung's most emotionally engaged alchemical work and the one that most directly connects his symbolic research to lived human experience. Reading it alongside the Rosarium Philosophorum images (widely available online) enhances the experience significantly.

If you are a clinician, read the shorter essays in Part One first. They provide practical guidance on therapeutic technique that remains relevant today. The essay on abreaction addresses the question of whether emotional discharge (catharsis) is therapeutically useful, a question that contemporary trauma therapy is still debating. Jung's nuanced answer, that abreaction is useful only when accompanied by insight, anticipates much of current thinking.

The volume reads well after Two Essays on Analytical Psychology (CW 7), which provides the theoretical foundations (persona, anima, individuation) that Volume 16 applies to clinical practice. It pairs naturally with Mysterium Coniunctionis (CW 14), which provides the full alchemical background for the transference study. For a complete understanding of Jung's view of the therapeutic relationship, read Volume 16 alongside Volume 7 and the relevant chapters of Mysterium.