In this guide

A woman sits at a library table in Berkeley, California, in 1974, cross-referencing a 1910 pamphlet against a Renaissance grimoire. She is looking for the original meanings of the cards, not the ones the occult revival had layered on top. That woman was Mary K. Greer, and her method — historical research married to personal practice — would reshape tarot education for decades to come. Mary K. Greer is an American tarot scholar, author, and teacher whose work shifted tarot study from fortune-telling toward a practice of personal transformation, historical accuracy, and psychological insight. Her 1984 book Tarot for Your Self introduced the concept of the tarot journal, and her later research on the Thoth deck and the Golden Dawn remains the most cited work in the field.

Who Is Mary K. Greer and Why Does She Matter?

Who Is Mary K. Greer and Why Does She Matter

Mary Katherine Greer was born in 1946 in Washington D.C. She earned a Master’s degree in English literature from the University of California, Berkeley, where she also studied Jungian psychology. That combination — literary analysis and depth psychology, became the engine of her approach to tarot.

Before Greer, most English-language tarot books fell into two camps. There were the occult manuals that assumed the reader already belonged to a secret society. And there were the “fortune-teller” paperbacks that gave memorized meanings for each card with no explanation of how those meanings were derived. Greer rejected both. She argued that the cards were a language, not a code. A language could be learned, questioned, and spoken back to. A code could only be deciphered by someone with the key.

Her first book, Tarot for Your Self (1984), was published by Newcastle Publishing, a small press that specialized in occult reprints. It sold slowly at first, then steadily, then became a standard text in tarot courses across the United States. By the 1990s, it had been translated into German, French, Spanish, and Portuguese. The book introduced three innovations that are now taken for granted: the tarot journal, the “card of the day” practice, and the idea that the reader’s personal associations with a card mattered as much as the traditional meanings.

What Did Greer Actually Change About Tarot Education?

What Did Greer Actually Change About Tarot Education

Three specific contributions stand out, each of which changed how tarot is taught.

The tarot journal. Greer did not invent the practice of keeping a notebook, but she was the first to systematize it for tarot. In Tarot for Your Self, she provided prompts, spreads, and reflection questions that turned the journal into a learning tool. The reader was not to memorize meanings but to record what each card brought up in their own life. A journal entry for the Three of Swords might note a recent breakup, a medical diagnosis, or a moment of clarity. Over time, the journal became a personal lexicon. This was radical in 1984. It meant that the authority for a card’s meaning shifted from the book to the reader.

The psychological frame. Greer drew heavily on Carl Jung’s concepts of archetypes, synchronicity, and the collective unconscious. She presented the tarot as a projective technique, akin to the Rorschach inkblot test or the Thematic Apperception Test used in clinical psychology. The cards did not predict events. They revealed the psychological state of the reader. This framing made tarot acceptable to a generation of therapists, academics, and spiritual seekers who would have dismissed fortune-telling as superstition.

Historical recovery work. In the 1990s, Greer turned to the history of the tarot itself. She co-authored Understanding the Tarot Court (1995) with Tom Little, which examined the court cards through the lens of medieval and Renaissance court culture. Then came The Complete Book of Tarot Reversals (2002), which traced the practice of reading reversed cards back to the earliest known tarot manuals. Her most ambitious historical work was Secrets of the Thoth Tarot by Aleister Crowley (2003), co-authored with Lon Milo DuQuette. The book was the first to publish Crowley’s own notes on the Thoth deck alongside a line-by-line commentary. It remains the definitive reference for that deck.

How Did Greer Recover the Thoth Deck’s Lost Meanings?

Aleister Crowley’s Thoth Tarot was published in 1969, twenty-two years after his death. The deck was accompanied by The Book of Thoth, Crowley’s dense, allusive text that assumed the reader had years of training in ceremonial magic. Most readers found it impenetrable. Greer and DuQuette spent five years tracking down Crowley’s original notes, letters, and manuscript drafts. They discovered that Crowley had revised his interpretations multiple times, sometimes contradicting the published version.

The result was Secrets of the Thoth Tarot, which presented each card with four layers of information: Crowley’s published text, his unpublished notes, the Golden Dawn attributions, and a plain-English explanation. For the first time, a reader could see why Crowley had changed the name of the Major Arcana card traditionally called Strength to Lust, or why he had altered the astrological correspondences of the Minor Arcana. Greer’s commentary did not simplify Crowley. It made his complexity navigable.

What Is the “Greer Method” for Reading Tarot?

Greer developed a reading method that she called the “personal process.” It has three steps.

First, the reader asks a question that is open-ended and self-directed. Not “Will I get the job?” but “What do I need to know about my approach to this job interview?” The question is written in the tarot journal.

Second, the cards are laid out in a spread. Greer’s most famous spread is the “Star Spread,” a twelve-card layout that maps onto the astrological houses. But she also popularized the three-card “past-present-future” spread and the “Celtic Cross” spread, which she adapted from the Golden Dawn version.

Third, the reader engages each card through a series of prompts: “What does this card remind me of in my own life?” “What is the emotional charge of this card?” “If this card could speak, what would it say?” The reader writes the answers in the journal. Only after this personal engagement does the reader consult traditional meanings.

This method has been adopted by tarot schools worldwide. It is the foundation of the “intuitive reading” movement, though Greer herself has always insisted that intuition must be grounded in historical knowledge. She has said, in multiple interviews, that the best tarot readers are those who know the traditional meanings so thoroughly that they can depart from them deliberately.

How Did Greer’s Work Intersect with the Golden Dawn?

The Hermetic Order of the Golden Dawn was a nineteenth-century magical order that produced the most influential tarot system in the English-speaking world. Greer did not join the Golden Dawn. She did not need to. She read its archives.

Her book Women of the Golden Dawn (1995) examined the lives of four women who were members of the order: Moina Mathers, Florence Farr, Annie Horniman, and Maud Gonne. The book was not primarily about tarot, but it changed how tarot historians understood the deck’s development. Greer showed that the Golden Dawn’s tarot system was not the work of a single genius but the product of a collaborative, often contentious, group of men and women. She traced specific card meanings to specific individuals, correcting decades of oversimplified history.

What Are the Most Common Misconceptions About Greer’s Work?

That she invented “intuitive reading.” Greer did not invent it. She systematized it. Intuitive reading had been practiced in various forms since the eighteenth century, but it had never been taught in a structured way. Greer provided the structure.

That she rejects traditional meanings. She does not. She argues that traditional meanings are the starting point, not the endpoint. A reader who ignores tradition, she has written, is like a musician who refuses to learn scales.

That her work is only for beginners. Tarot for Your Self is often assigned to beginners, but Greer’s later books, particularly on the Thoth deck and the court cards, require substantial background knowledge. She wrote for the full range of readers.

FAQ

Did Mary K. Greer study with Aleister Crowley? No. Crowley died in 1947, before Greer was born. She studied his work through archival research, not personal instruction.

Is Greer’s method compatible with traditional fortune-telling? It can be, but Greer herself has always emphasized psychological insight over prediction. She does not claim to tell the future.

What is Greer’s most accessible book? Tarot for Your Self remains the best starting point. It assumes no prior knowledge and includes exercises for every card.

Does Greer have a deck of her own? She does not. She has worked extensively with the Rider-Waite-Smith deck and the Thoth deck, but she has never created her own.

The Legacy

Mary K. Greer gave tarot readers a language for their own experience. She did not claim to have discovered the one true meaning of the cards. She claimed something more useful: that the meaning was in the encounter between the card and the person holding it. That encounter, recorded in a journal, studied with historical awareness, and spoken aloud in a reading, became the heart of modern tarot education.

For those who want to go deeper, the tarot section of our library covers the decks, spreads, and historical figures that Greer spent her career illuminating. The glossary entry on the Thoth deck explains the specific attributions that Greer helped recover. And our guide to reading tarot for personal development puts Greer’s method into practice.