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I am pleased to write an introduction for James Yuan’s new, well thought out, and scholarly translation of the Rosarium philosophorum. The Rosarium is an ancient and important alchemical manuscript which includes a series of twenty images that depict a process of deep transformation. How this process has been understood has varied from its early origin to our present-day reflections.
In a number of ancient alchemical texts, the transformation from lead into gold was understood in the spirit of the times as a process of change in material reality. The Rosarium likewise describes what can be seen as literal “chemical” processes, but it also links them with Greek, Persian, Arabic, Islamic, Egyptian, and Hermetic philosophy and the Christian religious tradition. These traditions have been elaborated by many thinkers: Plato, Aristotle, Avicenna, Geber, and others. These perspectives move alchemy beyond literalism to the complexity and sacredness of the human soul. This linkage makes the Rosarium difficult—and yet important—to read and understand. It opens a range not only of literal philosophical and religious perspectives but also does so in a psychological, mythical and symbolic way.
My interest and fascination with the Rosarium originated while studying C.G. Jung’s collected works on alchemy, particularly Psychology and Alchemy, Alchemical Studies, Mysterium Coniunctionis, and a section of his last chapter in The Practice of Psychotherapy: “An Account of the Transference Phenomena Based on the Illustrations to the ‘Rosarium Philosophorum.’” Jung describes these images as “an attempt to depict a mysterious basis of the opus,”[1] and he moves symbolically through ten of the twenty images, arriving at the complexio oppositorum, where the opposites coincide.
For Jung, the alchemical process described and imaged in the Rosarium was seen primarily as psychological and symbolic, which resonated with his understanding of the individuation process. Its images express a movement of the soul from the prima materia to the goal of wholeness.
While my own fascination with the Rosarium originated while studying Jung’s description of the symbolic process of individuation, I was also gripped by particular images. In Psychology and Alchemy, Jung speaks about the lapis and he notes that: “In the Rosarium the lapis says, quoting Hermes: ‘I beget the light, but the darkness too is of my nature ... therefore nothing better or more worthy of veneration can come to pass in the world than the conjunction of myself and my son. Similarly, the Monogenes [i.e., unique and one of a kind] is called ‘the dark light,’ a reminder of the sol niger, the black sun of alchemy.”[2] For me, the power of this image was a factor that led me forward in my work on the unification of darkness and light and the publication of my book entitled The Black Sun: The Alchemy and Art of Darkness. Almost all my published articles and books refer to some aspects of the Rosarium, which continues to inspire me and lets me open a broad perspective that does not reduce the transformative process simply to objective literalism or subjectivity. Rather, it opens the human soul to complexity and mystery, a mystery that supports and links literal material reality with philosophical, psychological, symbolic, imaginative, and sacred dimensions that lead to both archetypal wholeness and paradoxical multiplicity, an alchemical process and its goal: the Philosophers’ Stone.
For some, Jung’s elaboration of the Rosarium’s first ten images richly describes individuation and the alchemical process from the prima materia to the deep unification of the soul. Yet for others, the additional ten images of the Rosarium go even further beyond the wholeness of the individual to an expression of something more cosmic, transcendent, and divine. This last group of images has been taken up by a few Jungian analysts, including Edward Edinger, Nathan Schwartz-Salant, Joseph Henderson, and Murray Stein, who all felt that these final images could have expanded Jung’s ideas. While there might have been continued enrichment of Jung’s thought linked to the final ten images of the Rosarium, Jung nevertheless developed his own alchemical idea of the goal of the work reaching a vision of an archetypal, mysterious, and divine view of the Self.
The movement forward of Jung’s thought has recently been described in a book by Murray Stein entitled Jung and Alchemy: A Path to Individuation. In Chapter 5, he describes the Rosarium’s first ten images, and in the last chapter, he discusses the culmination of Jung’s opus Mysterium Coniunctionis, and Jung’s turn to the writings of Gerhard Dorn, “arguably his favorite alchemical philosopher.”[3] For Stein, “[this] union—of Self and unus mundus, individual and God—is echoed in the mystical traditions across cultures and epochs ... Jung suggested that, although this coniunctio defies rational comprehension, it manifests universally—in alchemical symbolism, religious mysticism, and modern depth psychology alike.”[4]
While from my perspective, although Jung’s own thought achieved profound psychological and alchemical depth that is resonant with the Rosarium’s last ten images, nevertheless there continues to be much value in working with the Rosarium’s final images and the insights and development they open.
Thanks to Yuan’s alchemical sensitivity to the text of the Rosarium, his translation enriches our understanding while at the same time recognizing the importance of its ambiguity by maintaining the paradoxes at the core of alchemy’s mysterious profundity. His work contributes to the important value of the Rosarium philosophorum for the ongoing study of psychology and alchemy in ways that continue to expand our understanding of the soul.
Stanton Marlan, Ph.D., ABPP, FABP
Jungian Analyst, Pittsburgh and Inter-Regional Societies of Jungian Analysts
[1] C. G. Jung, “Psychology of the Transference,” in The Collected Works of C. G. Jung, 2nd ed., ed. William McGuire, vol. 16, ed. Herbert Read et al., trans. R. F. C. Hull, Bollingen Series 20 (Princeton University Press, 1966), 203.
[2] C. G. Jung, The Collected Works of C. G. Jung: Psychology and Alchemy, 2nd ed., ed. William McGuire, vol. 12, ed. Herbert Read et al., trans. R. F. C. Hull, Bollingen Series 20 (Princeton University Press, 1968), para. 140.
[3] Murray Stein, Jung and Alchemy: A Path to Individuation (Chiron Publications, 2025), 119.
[4] Stein, Jung And Alchemy, 136–37.