The Figures

John Dee

Few careers hold together as strangely as John Dee’s: royal adviser and geographer to Elizabethan England, serious mathematician and, for years, a man who sat beside a scryer writing down what angels allegedly said. The temptation is to split him into a scientist who went wrong. The scholarship says: don’t.

What do we know about John Dee for certain?

We know a great deal about John Dee because he dated his diaries, catalogued his library and wrote accounts of his own career, and many of these papers survive. The card gives each key fact, the evidence for it and its status.

Checked on 1 November 2026, each source at the link in the card or in the list of sources below.

What did Dee do for mathematics and navigation?

In mathematics Dee is remembered chiefly for the long preface to the first English translation of Euclid’s Elements, made by H. Billingsley and printed in London by John Daye in 1570; Dee signed it at Mortlake on 9 February 1570. The title page promises an account of the chief mathematical sciences, what they are and what they are good for, and a fold-out “Groundplat” maps them as a tree. Britannica (2026) calls the preface an influential manifesto for the dignity and usefulness of the mathematical sciences. Dee also instructed captains and pilots in mathematical navigation and argued in public for a British empire in General and Rare Memorials pertayning to the Perfect Arte of Navigation (1577).

What is the Monas Hieroglyphica?

The Monas Hieroglyphica (Antwerp, 1564) is Dee’s Latin treatise on a single composite glyph of his own devising, expounded in 24 theorems and addressed on its title page to Maximilian, King of the Romans, Bohemia and Hungary. It came six years after his Propaedeumata Aphoristica (1558), which set out an astral-physical natural philosophy, and it compressed his ambitions into that one sign, uniting astronomical, alchemical and Kabbalistic symbolism: a one-character theory of everything, and the fullest expression of his alchemical natural philosophy. Its cast of mind (the cosmos as a web of correspondences a sign can capture) is the world of as above, so below. The title page warns the reader that whoever does not understand should keep silent or learn (qui non intelligit, aut taceat, aut discat).

What was Dee’s library at Mortlake?

Dee’s library was the collection of printed books and manuscripts at his house in Mortlake, near London, which he put at nearly 4,000 volumes in 1592, a quarter of them manuscripts. He catalogued it on 6 September 1583, fifteen days before he left for the Continent; two copies of the catalogue in his hand survive, and Julian Roberts and Andrew G. Watson edited it in full in 1990. By Dee’s own account, Elizabeth I rode to Mortlake with her Privy Council on 10 March 1575 to see the library, but would not go in because his wife had been buried that day; she asked instead to see his famous glass.

While he was abroad the library was pillaged and dispersed: Dee had left his household goods in the care of his brother-in-law Nicholas Fromond, who, he wrote, sold them or had them carried away, and many of the books passed to Nicholas Saunder. More than 100 reached the Royal College of Physicians with the Marquis of Dorchester’s library in the 1680s.

What did John Dee really do for Elizabeth I?

Dee served Elizabeth I as an adviser on call: he gave astrological, mathematical and geographical advice when it was asked for, and the wardenship of Manchester College came only in 1595, when he was 67. By his own account, written in 1592, she took him into her service before her coronation, promising that where her brother had given him a crown, she would give him a noble; at Robert Dudley’s command he wrote what the ancient astrologers would judge of the coronation day (she was crowned on 15 January 1559); and in 1577 she heard his opinion of the comet. The common claim that he “chose” the date rests on this account.

His diary has the queen stopping her coach by his house in Mortlake in September 1580, and on 3 October 1580, at Richmond, he handed her two rolls setting out her “title”, which the Lord Treasurer then examined. Britannica (2026) adds that he instructed captains and pilots in navigation, most closely for Martin Frobisher’s voyages of 1576-1578, and that in 1582 he recommended the Gregorian calendar for England, which the church refused. A deanery the queen granted him in 1564 went to someone else.

Did John Dee really talk to angels?

Dee believed so: his surviving records, from 22 December 1581, describe sessions in which a scryer gazed into a crystal and reported what angels said, first Barnabas Saul and, from 10 March 1582, Edward Kelley, and over the years he filled thousands of pages of his diaries with “angelic” dictation. He spent September 1583 to December 1589 on the Continent: he left England with Kelley and the Polish palatine Albert Łaski, held sessions at Łask and at Kraków in 1584, moved to Prague that August and from 1586 lived at Třeboň in Bohemia; when he set out for home in March 1589, Kelley stayed in Bohemia. The title page of the 1659 edition advertises Dee’s private conferences with Emperor Rudolf and King Stephen of Poland.

Deborah Harkness’s study (1999) treats the sessions not as senile credulity but as a coherent program: a universal science sought directly from the source, when books had run out. Christopher Whitby, who transcribed the earliest records in 1982, rejected the arguments that they were a deliberate fraud or a cipher exercise. That the man at the crystal was, by later accounts, a convicted forger (Whitby 1982, p. 43) is part of the story too; the reality is stranger than any embellishment.

What is the Enochian language?

The Enochian language is the angelic language recorded in Dee’s diaries, named after the “Book of Enoch” (Liber Loagaeth or Logaeth) that Kelley dictated between 29 March and 6 May 1583. Almost everything known about it comes from 48 “calls” that Kelley dictated with an English translation at Kraków between 13 April and 13 July 1584: about 250 different words, more than half of them used only once (Whitby 1982, pp. 141-148; Casaubon 1659).

The records present it as the language the angels taught Adam. The linguist Donald Laycock (1978) found its grammar close to English with the articles and prepositions taken out, and Whitby concluded that it is coherent enough to seem like a language but too irregular to be one in any formal sense. Its later life as ceremonial magic is a separate story, dated layer by layer on our provenance card for Enochian.

When were Dee’s spirit diaries published?

Dee’s spirit diaries were printed in London in 1659, when Meric Casaubon (1599-1671) published the records from 28 May 1583 onwards as A True & Faithful Relation of What Passed for Many Yeers between Dr. John Dee ... and Some Spirits. He worked from Dee’s own manuscript in Sir Thomas Cotton’s library, and the title page promises a preface confirming the reality of the spirits and showing the good uses a sober Christian may make of it all; in that preface Casaubon argues that Dee took lying spirits for angels. The five earlier books, from 22 December 1581 to May 1583, are not in it; Christopher Whitby transcribed them in full in his doctoral thesis (1982).

Where are Dee’s papers and objects today?

Dee’s earliest angel diaries are in the British Library, an obsidian mirror long called his is in the British Museum, and more than 100 of his books are at the Royal College of Physicians in London. The British Library’s Sloane MS 3188 holds the five books of 1581-1583, with Elias Ashmole’s fair copy in Sloane MS 3677; Ashmole blamed the missing leaves on a maid who used them to line pie dishes.

The mirror, Aztec work from Mexico whose obsidian was traced in 2019 to Pachuca, was bought by the museum in 1966; its link to Dee rests on a label thought to be in Horace Walpole’s hand, and the museum, while treating it as Dee’s, marks its passage from Dee to the first known owner as uncertain. The college, which describes its Dee books as the largest known group in one place, showed them in its 2016 exhibition Scholar, courtier, magician: the lost library of John Dee.

How Hermetic was Dee?

Less than his reputation suggests: Dee owned texts ascribed to Hermes, most of them medieval alchemy, and invoked Hermes in the Monas, but the portrait of him as a “Hermetic magus” is a twentieth-century reading that later scholars took apart. Frances Yates cast him as the archetypal “Hermetic magus” of Elizabethan England, for example in The Occult Philosophy in the Elizabethan Age (1979), and Peter French’s biography of 1972 is subtitled The World of an Elizabethan Magus. Nicholas Clulee’s John Dee’s Natural Philosophy (1988) took the portrait apart: Dee’s sources were far more eclectic (medieval optics, Roger Bacon, Kabbalah), and his career falls into distinct stages rather than one magus-arc.

Deborah Harkness (1999) argues that the angel conversations continued Dee’s earlier concerns, and shows them dealing with the natural world, natural philosophy and the apocalypse; Håkan Håkansson (2001) reads the whole career as a search for a language that could reveal both nature and God, from the visual sign of the Monas to the speech of Adam sought from the angels. The documented contacts are specific: the 1583 catalogue of his manuscripts lists texts under Hermes’s name, most of them among medieval alchemy, and the preface of the Monas claims that its sign expresses whatever twenty years of labour by maximus Hermes, the greatest Hermes, achieved. Dee is a key case study in the collapse of the strong Yates thesis, mapped with the rest of the tradition on the Atlas.

The Kabbalistic half of that synthesis has a Renaissance starting point: Pico della Mirandola, whose 900 theses of 1486 first offered Kabbalah to Christian readers as evidence for their own faith.

Which stories about John Dee are later legends?

Two popular stories about Dee are later inventions: that he was Elizabeth I’s secret agent “007”, and that the ceremonial “Enochian magic system” sold under his name is his own. Dee was not “the Queen’s secret agent 007”; that tale was popularized by Richard Deacon’s 1968 biography, which claims that Dee signed his letters to her with a cipher looking like “007”, and the Royal College of Physicians found no evidence of it while preparing its 2016 exhibition.

And the ceremonial “Enochian magic system” sold under his name is largely a later construction, re-engineered from his diaries by the Golden Dawn three centuries on: the order was founded in 1888, and its papers, now at the Museum of Freemasonry in London, include Enochian tablets and Enochian chess boards. The documented Dee, a royal mathematician transcribing angelic dictation night after night, needs neither.

Key facts

Born	13 July 1527, London
Died	December 1608 (Mortlake) or March 1609 (London)
Key works	Propaedeumata Aphoristica (1558); Monas Hieroglyphica (1564); preface to the English Euclid (1570)
From 1582	"Angel conversations" with the medium Edward Kelley, recorded in his diaries
Role	Mathematician, geographer and adviser at the Elizabethan court
Library	Nearly 4,000 volumes at Mortlake by his own count (1592); catalogue of 6 September 1583
Why he matters	Test case for the "Hermetic magus" reading of early modern science

Fair questions

What did John Dee do for Queen Elizabeth I?

He advised her when she asked. By his own account he wrote an astrological judgement of her coronation day (she was crowned on 15 January 1559) and gave his opinion of the comet of 1577; in 1580 he handed her two rolls on her “title”, and he taught navigation to captains and pilots, most closely for Martin Frobisher’s voyages of 1576-1578. He was granted the wardenship of Manchester College in 1595.

Did John Dee really talk to angels?

He believed so. His surviving records, from 22 December 1581, describe sessions in which a scryer looked into a crystal and reported what angels said, first Barnabas Saul and, from 10 March 1582, Edward Kelley; the five earliest books are in the British Library (Sloane MS 3188). Harkness (1999) reads the diaries as a coherent program of natural philosophy (an attempt at universal science), whatever one makes of the angels.

What is the Enochian language?

The angelic language of Dee’s diaries, named after the “Book of Enoch” that Kelley dictated in 1583. Almost all of it comes from 48 “calls” dictated with an English translation at Kraków in 1584, about 250 different words. The linguist Donald Laycock (1978) found its grammar close to English. The ceremonial “Enochian magic” built on it is later, from the Golden Dawn, founded in 1888.

What is the Monas Hieroglyphica?

A Latin treatise printed at Antwerp in 1564 and addressed to Maximilian, King of the Romans, which expounds, in 24 theorems, a single composite glyph of Dee’s own devising that unites astronomical, alchemical and Kabbalistic symbolism: his one-symbol summary of the cosmos.

Was John Dee a spy called 007?

No. The “Queen’s secret agent 007” story is a modern embellishment popularized by Richard Deacon’s 1968 biography, not a documented fact; the Royal College of Physicians found no evidence that Dee signed letters that way while preparing its 2016 exhibition on him.

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Sources & further reading

• Deborah E. Harkness, John Dee's Conversations with Angels: Cabala, Alchemy, and the End of Nature (Cambridge University Press, 1999), Cambridge Core.
• Nicholas H. Clulee, John Dee's Natural Philosophy: Between Science and Religion (London: Routledge, 1988).
• Stephen Clucas (ed.), John Dee: Interdisciplinary Studies in English Renaissance Thought (Dordrecht: Springer, 2006).
• Håkan Håkansson, Seeing the Word: John Dee and Renaissance Occultism, doctoral thesis, Lund University (Ugglan, Minervaserien 2, 2001), record and abstract.
• Christopher L. Whitby, John Dee's Actions with Spirits: 22 December 1581 to 23 May 1583, PhD thesis, University of Birmingham (1982), open access, vol. I: Kelley and his first sessions (pp. 43-44), the Book of Enoch, the 48 calls and the angelic language (pp. 141-149), with Donald C. Laycock, The Complete Enochian Dictionary (London, 1978), as quoted there.
• Frances A. Yates, The Occult Philosophy in the Elizabethan Age (London: Routledge & Kegan Paul, 1979); Peter J. French, John Dee: The World of an Elizabethan Magus (London: Routledge and Kegan Paul, 1972).
• Julian Roberts and Andrew G. Watson (eds.), John Dee's Library Catalogue (London: The Bibliographical Society, 1990), Open Library record.
• John Dee, preface to The Elements of Geometrie of the Most Auncient Philosopher Euclide of Megara, translated by H. Billingsley (London: John Daye, 1570), transcription at Project Gutenberg.
• John Dee, Monas Hieroglyphica (Antwerp: Willem Silvius, 1564), Wellcome Collection copy, public domain (title page; theorem 24; preface, section 14).
• John Dee, “The Compendious Rehearsall” (9 November 1592), in James Crossley (ed.), Autobiographical Tracts of Dr. John Dee (Chetham Society, 1851), scan at the Internet Archive.
• J. O. Halliwell (ed.), The Private Diary of Dr. John Dee, and the Catalogue of His Library of Manuscripts (London: Camden Society, 1842), transcription at Project Gutenberg.
• Meric Casaubon (ed.), A True & Faithful Relation of What Passed for Many Yeers between Dr. John Dee ... and Some Spirits (London: D. Maxwell for T. Garthwait, 1659), Getty Research Institute copy at the Internet Archive.
• British Library, Sloane MS 3188, John Dee's conferences with angels, 1581-1583, catalogue record (consulted 1 November 2026).
• British Museum, 1966,1001.1, Dr Dee's Magical Mirror, collection record (consulted 1 November 2026).
• Royal College of Physicians, Scholar, courtier, magician: the lost library of John Dee (exhibition, 2016; consulted 1 November 2026); Katie Birkwood, “Code making and code breaking: John Dee and the art of cryptography”, RCP Museum blog, 6 May 2016.
• Mordechai Feingold, “John Dee”, Encyclopaedia Britannica, updated 2 October 2026.
• Museum of Freemasonry, London, GBR 1991 GD, The Hermetic Order of the Golden Dawn, its members and related bodies, description at AIM25 (consulted 1 November 2026).
• Richard Deacon (Donald McCormick), John Dee: Scientist, Geographer, Astrologer and Secret Agent to Elizabeth I (London: Muller, 1968), Open Library record.
• Westminster Abbey, Elizabeth I: crowned on 15 January 1559 (consulted 1 November 2026).
• The Private Diary of Dr. John Dee (1842 ed.), scan at the Internet Archive.