Lewis Carroll

• 1. Introduction

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  Charles Lutwidge Dodgson was born on the 27th of January 1832 at All Saints' Vicarage in Daresbury, Cheshire, the third oldest of 11 children, and the world would come to know him by a name he invented for himself: Lewis Carroll. That name was an elaborate puzzle, a translation of his real name into Latin and back into English, then reversed. It was the perfect signature for a man who spent his life turning language inside out.

  Here was a mathematician who wrote nonsense verse that turned out to contain genuine logical principles. Here was a deacon who never became a priest. Here was a photographer who destroyed much of his own archive. Here was a man whose diaries contain deliberate gaps that scholars have been arguing over for more than a century. The questions his life raises are not small ones: what kind of person keeps meticulous letter registers yet leaves pages torn from private diaries? What made the same mind that proved theorems in linear algebra also invent Jabberwocky?

  By the time Dodgson died of pneumonia on the 14th of January 1898 at his sisters' home in Guildford, Surrey, less than two weeks before his 66th birthday, he had written and received close to 98,721 letters. He had produced nearly a dozen books of mathematics under his real name and several of the most enduring works in the English language under his pen name. An asteroid, 6984 Lewiscarroll, would eventually be named in his honour. The world he left behind was still puzzling out who he actually was.

• 2. Family and Formation

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  The Dodgson men tended toward two callings: the army and the church. Dodgson's great-grandfather had risen through clerical ranks to become the Bishop of Elphin in rural Ireland. His paternal grandfather, also named Charles, was an army captain who died in the Irish rebellion of 1803 when his two sons were barely out of infancy. One of those sons became Carroll's father, a man who attended Rugby School and then Christ Church, Oxford, won a double first degree, and then chose to become a country parson rather than pursue the academic career his talent had earned him.

  That father shaped his son in ways both intended and not. He was a high-church Anglican who admired John Henry Newman and the Tractarian movement, and he worked hard to pass those convictions on. What he produced instead was a son with an ambivalent relationship to those values. The elder Dodgson later became the Archdeacon of Richmond; the younger Dodgson became a writer of mathematical nonsense.

  At home in the rectory at Croft-on-Tees, Yorkshire, where the family moved when Dodgson was 11 and where they remained for the next 25 years, the young Charles showed a precocious intellect. At seven, he was reading The Pilgrim's Progress. He also stammered, a condition shared by most of his siblings, and it would follow him throughout his life. Mathematics master R. B. Mayor at Rugby School observed that he had not had a more promising boy at his age since coming to Rugby. A Latin inscription Dodgson wrote in his arithmetic textbook, Francis Walkingame's The Tutor's Assistant, translating to "This book belongs to Charles Lutwidge Dodgson: hands off!" still survives, a small early flash of the voice that would make him famous.

• 3. A Life at Christ Church

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  In January 1851, Dodgson went into residence at Christ Church, Oxford. He had been there only two days when he received the news that his mother had died of what was described as "inflammation of the brain", possibly meningitis or a stroke, at the age of 47. The loss landed early in what would otherwise be a brilliant start.

  By 1852 he had first-class honours in mathematics moderations, helped along by a nomination to a studentship from Canon Edward Pusey, his father's old friend. In 1854 he graduated Bachelor of Arts, standing first on the list in the Final Honours School of Mathematics. A year later he failed an important scholarship exam, by his own admission unable to apply himself consistently to study. Even so, the Christ Church Mathematical Lectureship came to him in 1855, and he held it for the next 26 years.

  His office as sub-librarian of the Christ Church library sat close to the deanery, where a family named Liddell would eventually live. In 1856, Dean Henry Liddell arrived at Christ Church with his young family, and Dodgson became close friends with Liddell's wife Lorina and their children, particularly the three sisters Lorina, Edith, and Alice Liddell. He continued to teach at Christ Church until 1881 and remained in residence there until his death. William Tuckwell, in his Reminiscences of Oxford published in 1900, described him as "austere, shy, precise, absorbed in mathematical reverie, watchfully tenacious of his dignity, stiffly conservative in political, theological, social theory, his life mapped out in squares like Alice's landscape."

• 4. The Alice Books

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  On the 4th of July 1862, Dodgson took Alice Liddell and her sisters on a rowing trip to Godstow, accompanied by an adult friend, and invented a story on the water. Alice begged him to write it down. After considerable delay, he presented her with a handwritten, illustrated manuscript in November 1864, titled Alice's Adventures Under Ground.

  Before seeking publication, Dodgson showed the unfinished manuscript to the family of George MacDonald, whose children's enthusiastic reaction persuaded him to proceed. In 1863 he took it to Macmillan the publisher, who liked it immediately. Possible alternative titles, Alice Among the Fairies and Alice's Golden Hour, were rejected. The expanded, substantially reworked book was published as Alice's Adventures in Wonderland in 1865, illustrated by Sir John Tenniel. The pen name on the cover, Lewis Carroll, had first appeared in print nine years earlier.

  The book's success changed Dodgson's life dramatically. Fan mail arrived in overwhelming quantities, along with attention he often did not welcome. One popular story held that Queen Victoria enjoyed the book so much that she requested his next work be dedicated to her, and was accordingly presented with his scholarly mathematical volume An Elementary Treatise on Determinants. Dodgson denied this story vehemently, calling it "utterly false in every particular."

  Through the Looking-Glass followed late in 1871; the title page of the first edition erroneously gives 1872 as the date of publication. Its somewhat darker mood may reflect the depression that followed his father's death in 1868. The acrostic poem at the end of that book spells out Alice Liddell's full name, yet Dodgson repeatedly denied in later life that his "little heroine" was based on any real child. He routinely dedicated works to girls of his acquaintance using acrostic poems; Gertrude Chataway's name appears at the beginning of The Hunting of the Snark in the same form.

• 5. Nonsense and Mathematics

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  In 1876, Dodgson published The Hunting of the Snark, a poem following a bizarre crew of nine tradesmen and one beaver on a quest to find the snark, illustrated by Henry Holiday. Contemporary reviews were largely mixed, but the public received it warmly: it was reprinted seventeen times between 1876 and 1908. Painter Dante Gabriel Rossetti reputedly became convinced the poem was about him.

  Within academic mathematics, Dodgson worked in geometry, linear and matrix algebra, mathematical logic, and recreational mathematics. He developed what is now called Dodgson condensation, a method of evaluating determinants; Robbins' and Rumsey's later investigation of this method led them to the alternating sign matrix conjecture, now a theorem. In Symbolic Logic Part II, published posthumously, he introduced the Method of Trees, recognised as the earliest modern use of a truth tree.

  In 1895, he developed a philosophical regressus-argument on deductive reasoning titled "What the Tortoise Said to Achilles", published in the journal Mind. The article was reprinted in the same journal a hundred years later in 1995, with a subsequent article by Simon Blackburn titled "Practical Tortoise Raising." Dodgson also proposed the Dodgson's method using the Condorcet method for parliamentary representation, and in 1884 proposed a proportional representation system based on multi-member districts with votes transferable through what is now called liquid democracy.

  Some of Alice's nonsensical wonderland logic directly reflects his published work on mathematical logic; the two bodies of work were not as separate as they might have appeared to his contemporaries.

• 6. Inventions and Correspondence

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  Dodgson's appetite for solving small problems produced a remarkable collection of inventions. The nyctograph, a gridded card with sixteen squares and a system of symbols representing an alphabet of his own design, allowed note-taking in the dark without getting out of bed to strike a light. His word ladder puzzle, which he called "Doublets", first appeared in Vanity Fair on the 29th of March 1879; he wrote a weekly column for the magazine for two years, with the final column dated the 9th of April 1881. The puzzle transforms one word into another by changing one letter at a time, each change producing a genuine word, as when CAT becomes DOG through CAT, COT, DOT, DOG.

  He also devised an early version of what is now known as Scrabble, invented sometime in 1878. His other inventions include a rule for finding the day of the week for any date, fairer elimination rules for tennis tournaments, a cardboard scale for the Senior Common Room at Christ Church ensuring the correct amount of liqueur for the price paid, a double-sided adhesive strip to fasten envelopes, a device for helping a bedridden invalid read a book placed sideways, and at least two ciphers for cryptography.

  He tracked his correspondence through a special letter register he devised himself, recording close to 98,721 letters sent and received. His pamphlet "Eight or Nine Wise Words about Letter-Writing", published in 1890, documented his advice on writing more satisfying letters. The games and puzzles of Lewis Carroll were later the subject of Martin Gardner's March 1960 Mathematical Games column in Scientific American.

• 7. Photography and Its Controversies

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  In 1856, Dodgson took up photography under the influence of his uncle Skeffington Lutwidge and later his Oxford friend Reginald Southey. Over 24 years, he created around 3,000 images and established his own studio on the roof of Tom Quad. Fewer than 1,000 survived time and deliberate destruction; roughly 60% of his original photographic portfolio was deliberately destroyed. A study by Roger Taylor and Edward Wakeling calculated that just over half of Dodgson's surviving work depicts young girls, and thirty surviving photographs depict nude or semi-nude children.

  He stopped taking photographs in 1880 because maintaining the studio had become too time-consuming. Commercial photographers had adopted the dry-plate process in the 1870s, making the work faster; Dodgson used the slower wet collodion process throughout. His portraits of notable sitters included John Everett Millais, Ellen Terry, Dante Gabriel Rossetti, Julia Margaret Cameron, Michael Faraday, Lord Salisbury, and Alfred Tennyson.

  A 2015 BBC documentary, The Secret World of Lewis Carroll, directed by Clare Beavan and produced by Swan Films, raised questions about Dodgson's relationship with the Liddell children and included a "disturbing" photograph held in the archives of the Musee Cantini in Marseille. Carroll scholar Edward Wakeling subsequently revealed that the photograph had first appeared in the 1970s when owned by Parisian photo collectors, and was purchased by the Musee Cantini in 1994. Wakeling's review, "Eight or nine wise words on documentary making", published in March 2015 in the Lewis Carroll society newsletter Bandersnatch, identified multiple factual errors in the documentary, noted that the photograph lacked Dodgson's usual personal catalogue number on the back, and that the pencil inscription linking it to Carroll was in an unknown hand. The BBC Trust later ruled the documentary could not be broadcast in the UK again in its current form.

  Karoline Leach's reappraisal, which she termed the demolition of "the Carroll Myth", drew attention to large amounts of diary and letter evidence showing Dodgson's keen interest in adult women. She argued that suggestions of paedophilia emerged only after his death, when family members suppressed evidence of his relationships with women to protect his reputation, creating a false impression of a man interested only in children. A document discovered in the Dodgson family archive in 1996 suggests that the break with the Liddell family in June 1863 followed gossip about Dodgson's relationship with the family governess and with Alice's older sister Lorina, not with Alice herself.

• 8. Legacy and the Missing Diaries

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  At least four complete volumes and around seven pages are missing from Dodgson's 13 diaries. The removed pages cover primarily the period between 1853 and 1863, when Dodgson was between 21 and 31 years old. A document known as the "cut pages in diary", written by Carroll's nephew Philip Dodgson Jacques well after Carroll's death, based on information from his aunts, indicates they destroyed two diary pages, including the one for the 27th of June 1863. Jacques did not see the pages himself. A 1930 letter from the younger Lorina Liddell to Alice, reporting an interview with an early Dodgson biographer, states that Lorina told the interviewer that Dodgson's "manner became too affectionate to you as you grew older, and that mother spoke to him about it, and that offended him so he ceased coming to visit us again."

  In 1982, his great-nephew unveiled a memorial stone at Poets' Corner in Westminster Abbey. The Lewis Carroll Centenary Wood near his birthplace in Daresbury opened in 2000. All Saints' Church in Daresbury commemorates him with stained glass windows depicting characters from Alice's Adventures in Wonderland, and the Lewis Carroll Centre attached to the church opened in March 2012. In January 1994, asteroid 6984 Lewiscarroll was discovered and named in his honour. A private collection of thousands of items, including letters, photographs, illustrations, and books connected with Lewis Carroll, was donated to Christ Church, part of the University of Oxford, in 2025.

  Dodgson's 1895 article "What the Tortoise Said to Achilles" remains actively cited in philosophy of logic, reprinted and discussed in Mind a full century after its first publication, which places the arguments of the man who wrote Jabberwocky squarely in the working literature of academic philosophy.