A small package arrived at the Allahabad home of A.P. Sinnett in the autumn of 1880. Inside was a letter written in blue ink on flimsy paper, signed with initials “K.H.” The sender claimed to be a Tibetan adept. Sinnett, editor of the Pioneer and a recent convert to Theosophy, did not know then that this single piece of mail would ignite a controversy that has smoldered for over 140 years.
The Mahatma Letters are a collection of correspondence allegedly from two Tibetan adepts, Koot Hoomi and Morya, to A.P. Sinnett and other early Theosophists between 1880 and 1885. They remain the most contested primary source in Western esotericism: revered by Theosophists as authentic transmissions from enlightened masters, dismissed by critics as Helena Blavatsky’s forgeries.
How the Letters Came to Be
The story begins with the founding of the Theosophical Society in 1875. By 1879, Helena Blavatsky and Henry Olcott had moved to India, settling first in Bombay and later at Adyar, Madras. There they attracted a circle of British colonial officials and journalists, among them Alfred Percy Sinnett. Sinnett had already written The Occult World (1881), which described Blavatsky’s phenomena. He wanted direct contact with the Mahatmas, the hidden adepts who she claimed guided the Society.
The letters arrived through what Theosophists called the “drop” system. Sinnett would place a letter in a special cabinet or under a pillow, and a reply would appear hours or days later, sometimes in Blavatsky’s presence, sometimes not. The letters were written in English, occasionally with phrases in Tibetan or Sanskrit, and covered topics ranging from the nature of the astral plane to the history of Atlantis. Over five years, Sinnett received roughly 140 letters. A.O. Hume, another British official, received about 60. A few others went to Blavatsky’s relatives and associates.
The correspondence ended in 1885 when Blavatsky left India under a cloud of scandal. The letters were later collected and published in 1923 by A.T. Barker as The Mahatma Letters to A.P. Sinnett. A second edition in 1926 included additional material.
What the Letters Actually Say
The letters do not present a single systematic doctrine. They are conversational, sometimes elliptical, and often impatient with Sinnett’s questions. But taken together, they outline a cosmology that became the backbone of Theosophical teaching.
The adepts describe a hierarchy of seven planes of existence, from the physical to the purely spiritual. They explain reincarnation as a process of gradual spiritual evolution across many lives. They discuss karma as a law of cause and effect that operates not only individually but collectively across races and planets. They name a series of root races that preceded modern humanity, including the Lemurians and Atlanteans, and they claim that the Earth itself is a sentient being.
The letters also address practical occultism: how to develop clairvoyance, the dangers of mediumship, the nature of the “astral light,” and the relationship between the human will and the forces of nature. They warn against seeking powers for selfish ends and insist that true spiritual progress requires moral purification.
One of the most striking features is the tone. Koot Hoomi and Morya write as men, not gods. They complain about the heat of India, express frustration with Sinnett’s skepticism, and occasionally joke. This human quality has been cited both as evidence of authenticity (who would forge such mundane details?) and as evidence of fraud (Blavatsky writing in character).
The Controversy: Fraud or Genuine?
The controversy erupted almost immediately. In 1884, the Society for Psychical Research (SPR) sent investigator Richard Hodgson to India. Hodgson interviewed witnesses, examined the letters, and studied the “shrine” where some letters appeared. His 1885 report concluded that the letters were forgeries written by Blavatsky. He pointed to handwriting similarities, the use of a sliding panel in the shrine, and the testimony of servants who claimed to have seen Blavatsky writing the letters herself.
For decades, the Hodgson report stood as the definitive verdict. The Mahatma Letters were treated by mainstream scholarship as a case study in religious fraud. But the case was never closed.
In 1997, Vernon Harrison, a handwriting expert and former president of the Royal Society of Arts, re-examined the evidence. His analysis, published in Theosophical History, found that the handwriting evidence was inconclusive. He argued that Hodgson had relied on a single sample of Blavatsky’s writing, that the sliding panel theory was physically implausible, and that the servant testimony was contradictory. Harrison’s conclusion: the case against Blavatsky was “not proven.”
The debate has not ended. Some scholars, like K. Paul Johnson, argue that the Mahatmas were real human beings, not supernatural adepts: perhaps a group of Tibetan lamas or Indian yogis who used Blavatsky as a front. Others maintain that the letters are entirely Blavatsky’s invention, a literary device to lend authority to her teachings. A third camp, including many practicing Theosophists, accepts the letters as genuine transmissions from beings who exist on a higher plane.
How Theosophists Use the Letters Today
The Mahatma Letters are not a liturgical text. They are not read aloud in ceremonies or used in meditation. Their role is doctrinal and pedagogical. Theosophical lodges around the world hold study groups where members read a letter and discuss its meaning. The letters are often cross-referenced with Blavatsky’s The Secret Doctrine and Isis Unveiled.
For many Theosophists, the letters carry a special authority because they come directly from the Masters, bypassing even Blavatsky herself. This makes them a kind of primary revelation. But the letters are not considered infallible. The Masters themselves warn that their teachings are partial and adapted to the limitations of their audience.
We have seen study groups spend months on a single letter, parsing its references to Hindu and Buddhist philosophy, its cryptic allusions to historical events, and its occasional contradictions with later Theosophical writings. The letters reward slow reading.
Comparisons with Other Channeled Texts
The Mahatma Letters belong to a family of texts that claim to originate from non-human or superhuman sources. The closest parallel is the Urantia Book (1955), which purports to be a revelation from celestial beings. Both texts blend cosmology, history, and spiritual instruction. Both have been accused of fraud. Both have passionate defenders.
But there are differences. The Urantia Book is a single, polished volume. The Mahatma Letters are a messy correspondence, full of personal asides and unfinished arguments. The Urantia Book claims to come from multiple authors on different planets; the Mahatma Letters come from two named individuals who write in a consistent voice.
Another comparison is the Aquarian Gospel of Jesus the Christ (1908) by Levi Dowling, which claims to be channeled from the Akashic Records. That text is more narrative and less philosophical. The Mahatma Letters are closer to a correspondence course in occultism.
The letters also resemble the later works of Alice Bailey, who claimed to be in telepathic contact with a Tibetan master she called “the Tibetan.” Bailey’s books are systematic and doctrinal, while the Mahatma Letters are episodic. Both, however, share the same cosmology of masters, rays, and planetary hierarchies.
Common Misconceptions
That the letters are proven forgeries. The Hodgson report was influential but not definitive. Harrison’s re-examination showed significant flaws in the original investigation. The question remains open.
That the letters contain all Theosophical doctrine. They do not. Blavatsky’s own works are far more comprehensive. The letters focus on specific questions Sinnett asked. They are a supplement, not a summary.
That the Mahatmas are fictional characters. Many Theosophists believe they are real beings who have achieved enlightenment and guide humanity. Others see them as symbolic archetypes. The letters themselves insist on their reality.
That the letters are still secret. They have been published in full since 1923. Digital copies are freely available online. There is no hidden cache of additional letters.
FAQ
Are the Mahatma Letters considered authentic by mainstream scholars? No. Most academic historians of religion treat them as Blavatsky’s creations, though a minority argue for their authenticity or for a human intermediary.
What is the main content of the letters? They cover reincarnation, karma, the seven planes of existence, root races, the nature of the astral plane, and practical advice for spiritual development.
Who were Koot Hoomi and Morya? In Theosophical belief, they are two of the Mahatmas, enlightened beings who live in Tibet and guide the evolution of humanity. Critics see them as fictional characters invented by Blavatsky.
How did the letters influence Theosophy? They provided the doctrinal foundation for many Theosophical teachings, especially on reincarnation and the hierarchy of masters. They remain a primary source for study groups.
The Mahatma Letters resist easy judgment. They are at once a historical puzzle, a doctrinal source, and a window into the mind of a movement that shaped modern esotericism. Whether one reads them as revelation or as literature, they demand attention. For those who wish to go deeper, we recommend our guide to Theosophy, the glossary of Theosophical terms, and our article on Helena Blavatsky and the writing of The Secret Doctrine.