The 100 best challenging books about philosophy and ideas

Crime and Punishment by Fyodor Dostoevsky, Labyrinths by Jorge Luis Borges and Antony and Cleopatra by William Shakespeare lead the 100 best challenging books about philosophy and ideas, ranked by literary regard. To start, The Good Soldier by Ford Madox Ford is the most approachable of the highly regarded books here, about 7 hours to read.

Each point of light is one of the 100, placed by how hard it is to read. The brighter, the higher it ranks. The dotted line is one way up.

100
books
1,294
hours to read
16
free to read here
Challenging38 booksDifficult59 booksVery Difficult3 books

Tap a light to see its book · tap a cluster to keep only its books

No. 1 of 100

Crime and Punishment

Fyodor Dostoevsky · 1866

Difficulty 70/10024 hours

Open the book
SortAs rankedEasiest firstShortest first
Readable here · 16

Hours at an average pace

Showing 100 books

About 1,294 hours for 100 of 100 books with measured lengths. Estimates use 250 words a minute, adjusted for each book's difficulty. At 2 hours a day, about 647 days for those books.

1–10 · 152 hours
  1. No. 1 on this list. Crime and Punishment

    Fyodor Dostoevsky · 1866

    Difficult24 hours

    Taught in schools: Common Core text exemplars (Appendix B) (US), Lektury obowiązkowe – Polish national reading list (Poland), Lithuanian literature curriculum (lietuvių kalba ir literatūra)

    Included in: Bokklubben World Library

    Crime and Punishment is required reading in virtually every world literature curriculum and Russian literature course. It appears on 711 university syllabi (Open Syllabus) and is available in 82 Wikipedia languages, placing it among the most globally recognized novels ever written. It consistently appears on canonical 'greatest novels' lists, including TIME's All-TIME 100 Novels.

  2. Labyrinths is the standard English-language anthology through which Borges enters world literature curricula, taught in virtually every major comparative literature, Latin American literature, and 20th-century fiction course at universities worldwide. Published by New Directions in 1962, it established the benchmark for how Borges is read in translation and has remained continuously in print for over six decades as an essential classroom and critical text.

  3. No. 3 on this list. Antony and Cleopatra

    William Shakespeare · 1607

    Challenging2.7 hours

    Taught in schools: WJEC/Eduqas GCSE and A-level English Literature (UK)

    Included in: Great Books of the Western World

    Antony and Cleopatra appears on virtually every Shakespeare survey and major tragedy course in English-speaking universities. It is included in all complete works editions — Oxford, Arden, Folger, Norton — and features on most 'essential Shakespeare' reading lists. While taught less frequently than Hamlet or King Lear, it holds permanent status as one of the four or five major late tragedies.

  4. No. 4 on this list. Utopia

    Thomas More · 1516

    Challenging4.3 hours

    Utopia is a fixture in political philosophy, early modern history, and English literature curricula globally. The word 'utopia' entered every major European language, a feat achieved by fewer than a dozen literary works. It appears on thousands of university syllabi across disciplines — philosophy, political science, history, English, Renaissance studies — and is universally recognized as foundational reading.

  5. No. 5 on this list. Troilus and Criseyde

    Geoffrey Chaucer · 1385

    Difficult9.3 hours

    Included in: Great Books of the Western World

    Required reading in virtually every medieval English literature curriculum, taught across English, Comparative Literature, and Medieval Studies programs at universities worldwide. Though Open Syllabus data is unavailable here, Chaucer courses built around this text are standard at every major university with an English department. It holds a place among the most-studied long poems in the English language.

  6. The Faerie Queene appears in virtually every English Renaissance literature syllabus globally and is one of the most taught long poems in university English departments worldwide. It anchors the canon between Chaucer and Milton and is central to every history of the English literary tradition. Absence from the Open Syllabus database reflects data gaps, not actual classroom presence.

  7. No. 7 on this list. Gulliver's Travels

    Jonathan Swift · 1726

    Challenging10 hours

    Taught in schools: CSEC English B – Caribbean Examinations Council, Hungarian literature curriculum (magyar nyelv és irodalom) (Hungary)

    Included in: Bokklubben World Library, Great Books of the Western World

    Swift shrinks his protagonist to six inches in Lilliput, inflates him to a giant in Brobdingnag, then deposits him among rational horses who regard humans as vermin. No other satire in English has so thoroughly weaponized scale and perspective to indict politics, science, and the species itself.

  8. Rayuela is one of the core novels of the Latin American Boom, taught in Spanish and world literature courses across the Americas and Europe. It appears on most lists of the great Spanish-language novels of the century.

  9. Listed among Le Monde's 100 Books of the Century (1999) and the Open Syllabus Top 500 in Literature, with Wikipedia presence in 10 languages. The Theatre and Its Double is essential reading in theatre studies programs worldwide. Published by NYRB Classics. Every contemporary theatre practitioner and scholar encounters Artaud's theories in courses on performance studies, avant-garde theatre, modernism, and cultural theory.

  10. No. 10 on this list. The Unnamable

    Samuel Beckett · 1953

    Difficult27 hours

    Included in: Bokklubben World Library

    The Unnamable is taught in advanced modernism, postmodernism, and philosophy-of-language courses at universities worldwide, though less universally than Waiting for Godot. It anchors the Beckett Trilogy, which is among the canonical texts of twentieth-century literature in English and French. The Wikipedia and syllabus data signals appear underreported for this work.

11–20 · 93 hours
  1. No. 11 on this list. Troilus and Cressida · William Shakespeare · 1609

    Included in: Great Books of the Western World

    Troilus, a young Trojan prince, has fallen in love with Cressida just as the war with Greece enters its seventh year. Her uncle Pandarus brokers their union; they spend a single night together before she is traded to the Greeks in a prisoner exchange. In the Greek camp, Diomedes moves in. Troilus follows and watches it happen, unable to reconcile what his eyes show him with what he believes about faith and love. Running alongside this is a war machine in paralysis. Achilles sulks in his tent while the Greek generals hold councils on hierarchy and strategy that change nothing. Hector debates whether to fight a war he knows is unjust, then fights it anyway. Thersites, a deformed Greek soldier, follows everyone around cataloguing their stupidity with inexhaustible venom — war and lechery, he announces repeatedly, is all there is. Shakespeare wrote this play around 1602, and it does not behave like his others. The love story ends in betrayal rather than union. The heroes are vain, the strategies fail, and the climax — Hector murdered unarmed by Achilles and a pack of Myrmidons — is a deliberate outrage against the conventions of heroic drama. Pandarus delivers the final speech, offering the audience his syphilis. The play refuses catharsis. Readers expecting Shakespeare to redeem his characters or their world will find nothing of the kind.

    Difficult3.1 hours

    Read now
  2. No. 12 on this list. Measure for Measure · William Shakespeare · 1604

    Taught in schools: AQA GCSE and A-level English Literature (UK), WJEC/Eduqas GCSE and A-level English Literature (UK)

    Included in: Great Books of the Western World

    Measure for Measure appears on university syllabi across English literature, drama, law, and gender studies courses worldwide. It is one of Shakespeare's most-taught 'problem plays,' central to any serious study of his canon, with Wikipedia articles in dozens of languages. Less ubiquitous than Hamlet or Macbeth, but firmly within the core Shakespeare curriculum.

    Difficult2.8 hours

    Read now
  3. No. 13 on this list. The Brothers Karamazov · Fyodor Dostoevsky · 1880

    Included in: Bokklubben World Library, Great Books of the Western World

    Dostoevsky staged the question of whether God's existence can be reconciled with the suffering of children as a family drama among four brothers, each embodying a different answer. The Grand Inquisitor chapter alone would secure its place; the rest of the novel makes it the most intellectually ambitious work of fiction ever completed.

    Challenging35 hours

    Read now
  4. No. 14 on this list. Residence on Earth · Pablo Neruda · 1933

    Pablo Neruda wrote the poems of 'Residence on Earth' during his years as a Chilean consul in Burma, Ceylon, and Java — postings that left him profoundly isolated, surrounded by unfamiliar languages and dissolving heat. What came out was a poetry of radical disorientation: rain that rots wood, flesh that smells of brine, clocks that leak time like a wound. The opening poem, 'Galope Muerto,' begins mid-sensation: 'Like ashes, like oceans populating themselves, in the submerged slowness, in the shapeless.' There is no speaker announced, no situation established. The collection works entirely through image — blood, sea, bone, stone — stacked without logical mortar until the pressure of accumulated sensation becomes its own argument. 'Walking Around' describes a man so disgusted by modern life he wants to throw everything away, the umbrellas and the accountants and the stockings. 'Ode with a Lament' addresses an unnamed woman through images of shipwrecks and salt. The later sections shift toward political fury — odes to Madrid under bombardment, to Stalingrad, to Spain's dead — but even the political poems work through elemental image rather than rhetoric. This is poetry that does not explain itself. Readers who need a narrative thread or an argument will find none. Those willing to receive sensation as meaning will encounter one of the most physically intense bodies of verse written in the 20th century.

    Difficult7 hours

    Start this book
  5. No. 15 on this list. The Caucasian Chalk Circle · Bertolt Brecht · 1948

    The Caucasian Chalk Circle is among the most-taught plays in university drama and literature curricula worldwide, standard on syllabi alongside Mother Courage and The Good Person of Szechwan. It appears in secondary school programs across Europe and is a fixture of Western dramatic canon, placing it well above mid-century works that lack similar educational penetration.

    Difficult4.7 hours

    Start this book
  6. No. 16 on this list. Lord of the Flies · William Golding · 1954

    Taught in schools: AQA GCSE and A-level English Literature (UK), Pacific Senior Secondary Certificate – English, Pearson Edexcel GCSE and A-level English Literature (UK)

    Lord of the Flies appears on 546 university syllabi according to Open Syllabus (68th percentile), placing it among the most-taught novels in anglophone higher education. It ranks on the Modern Library 100 Best Novels (#41), TIME All-TIME 100 Novels, and BBC Big Read Top 100, and its Wikipedia article exists in 53 languages. Standard secondary-school reading in the UK, it has maintained curriculum presence for over six decades.

    Challenging5.8 hours

    Start this book
  7. No. 17 on this list. Voss · Patrick White · 1957

    Voss is recognized as a cornerstone of Australian literature and a major work of postcolonial fiction. It consistently appears in scholarly discussions of antipodean identity, imperial mythology, and mid-century modernism. The novel has maintained critical attention since publication and is standard curriculum in Australian and Commonwealth literary studies.

    Challenging16 hours

    Start this book
  8. No. 18 on this list. The Picture of Dorian Gray · Oscar Wilde

    Taught in schools: AQA GCSE and A-level English Literature (UK), Pearson Edexcel GCSE and A-level English Literature (UK)

    Included in: Oxford World's Classics

    The Picture of Dorian Gray is standard reading in Victorian literature and aesthetic movement curricula worldwide. Though the database shows only 16 syllabus appearances due to limited data collection, the novel appears on virtually every canonical survey of English literature and has been in continuous print since 1890. It anchors discussions of aestheticism, decadence, and Victorian moral philosophy in university courses across the globe.

    Challenging8 hours

    Start this book
  9. No. 19 on this list. The Burning Plain and Other Stories · Juan Rulfo · 1953

    Taught in schools: UNAM Escuela Nacional Preparatoria – programas de Literatura (Mexico)

    In seventeen stories set across the parched hills of Jalisco, Mexico, Rulfo's peasants carry their dead with them — sometimes literally. A man hauls his father's corpse on his back through the mountains. An old woman refuses to believe her son is a murderer. Soldiers and sharecroppers and abandoned wives speak in short, exact sentences, and the landscape answers with dust and silence. The dead narrate their own stories without announcing they are dead; readers piece it together from the wrong temperature of the prose. Rulfo strips everything from his fiction — backstory, explanation, transitions — until only the essential pressure remains. The Burning Plain was published in 1953, two years before Pedro Páramo, and it shares that novel's method: grief without sentimentality, violence without drama, the supernatural arriving with the matter-of-fact normalness of weather. Gabriel García Márquez said he memorized the entire book and recited it to friends. That is the correct response. These stories end before they explain themselves, in the way that real catastrophe does.

    Challenging3.4 hours

    Start this book
  10. No. 20 on this list. The Kreutzer Sonata · Leo Tolstoy · 1889

    The Kreutzer Sonata holds a firm place in university curricula for Russian literature, world literature, and gender studies courses. While less taught than Anna Karenina or War and Peace, it appears consistently as required reading in Tolstoy surveys and 19th-century European fiction courses. Its inclusion in countless 'essential Tolstoy' and world literature reading lists reflects its canonical standing.

    Difficult7.5 hours

    Read now
21–30 · 86 hours
  1. No. 21 on this list. The Good Soldier · Ford Madox Ford · 1915

    Appears on 473 university syllabi (67th percentile in Open Syllabus), placing it firmly in the modernist teaching canon alongside Conrad and early Lawrence. Listed on the Modern Library 100 Best Novels. A standard text in courses on British modernism and narrative technique, though less universally assigned than Woolf or Joyce.

    Challenging7 hours

    Read now
  2. No. 22 on this list. The Ones Who Walk Away from Omelas · Ursula K Le Guin · 1973

    Widely taught in philosophy, ethics, and literature courses globally. Anthologized in hundreds of collections and featured on virtually every 'essential short fiction' list. Its presence in academic syllabi rivals Borges and Kafka in ethics curricula, where it functions as a standard thought-experiment text.

    Challenging40 min

    Start this book
  3. No. 23 on this list. Jacob's Room · Virginia Woolf · 1922

    Jacob's Room appears on virtually every university syllabus covering modernist British literature, Woolf's work, or the literature of WWI. As Woolf's first fully experimental novel, it holds a foundational position in the modernist canon — taught alongside Mrs. Dalloway and To the Lighthouse in most Woolf courses. Its canonical status is somewhat lower than Woolf's later masterworks, which overshadow it in general survey courses.

    Difficult6.8 hours

    Read now
  4. No. 24 on this list. Elective Affinities · Johann Wolfgang von Goethe · 1809

    A fixture in German literature curricula worldwide and central to comparative literature courses treating the European novel of ideas. Available in Penguin Classics, Oxford World's Classics, and numerous scholarly editions. Considered alongside Faust and The Sorrows of Young Werther as Goethe's essential prose fiction, though less taught at secondary level than those more accessible works.

    Challenging9.2 hours

    Start this book
  5. No. 25 on this list. The Plague of Doves · Louise Erdrich · 2008

    Pulitzer Prize finalist (2009) and the first entry in a trilogy whose second volume, The Round House, won the National Book Award. Taught in university courses on contemporary American and Native American literature, with an established academic presence in postcolonial and ethnic studies. Widely regarded as one of Erdrich's most formally accomplished novels.

    Difficult14 hours

    Start this book
  6. No. 26 on this list. The Axion Esti · Odysseas Elytis · 1959

    The Axion Esti stands as the central work of modern Greek poetry and one of the most significant long poems of the 20th century. It holds canonical status in Greek literature comparable to The Waste Land in English, widely taught in Greek schools and universities. The work's international recognition increased substantially after Elytis received the Nobel Prize in Literature (1979), though it remains less widely read outside Greece than other Nobel-honored poetry.

    Challenging38 min

    Start this book
  7. No. 27 on this list. The Vatican Cellars · André Gide · 1914

    The Vatican Cellars opens in Rome in 1890 with Anthime Armand-Dubois, a freemason rationalist whose body trembles with spasms while his wife Véronique maintains quiet devotion. Anthime conducts vivisection experiments on animals to reduce behavior to simple tropisms, recruiting street orphan Beppo to procure his living test subjects. When Anthime smashes a Madonna statue in fury at his wife's prayers, he experiences a dream-vision of the Blessed Virgin that leaves him physically healed yet spiritually transformed. The novel then shifts to Julius de Baraglioul, a novelist and aristocrat whose father sends him to investigate the mysterious young Lafcadio Wluiki, a mysterious nineteen-year-old orphan of dubious origins. Julius discovers Lafcadio's private notebook, where the youth records not moral reflections but acts of self-harm, punishing himself with meticulous tallies for imagined transgressions. Gide weaves together these character strands with satirical precision, creating a darkly comic examination of belief, rebellion, and the peculiar violence that lurks beneath bourgeois respectability.

    Challenging7.5 hours

    Start this book
  8. No. 28 on this list. The Age of Reason · Jean-Paul Sartre · 1945

    Standard reading in French literature, European modernism, and existentialist philosophy courses worldwide. The Wikipedia article exists in 26 languages with a substantial dedicated Reception section, reflecting sustained international critical attention since the novel's 1945 publication. While not as universally required as Sartre's own Nausea or No Exit, The Age of Reason remains a fixed point of reference in 20th-century fiction curricula.

    Challenging12 hours

    Start this book
  9. No. 29 on this list. Thus Spoke Zarathustra · Friedrich Nietzsche · 1885

    Major philosophical and literary text; influenced twentieth-century thought.

    Challenging12 hours

    Start this book
  10. No. 30 on this list. Palace of Desire · Naguib Mahfouz · 1957

    The Cairo Trilogy is Mahfouz's defining work, but individual volumes appear less frequently on syllabi than standalone classics. Palace of Desire appears on only 2 university syllabi in the Open Syllabus Project. The trilogy is a fixture in world literature and Arabic literature courses, though Western curricula tend to assign excerpts or the first volume rather than the full sequence.

    Challenging16 hours

    Start this book
31–40 · 155 hours
  1. No. 31 on this list. His Master's Voice

    Stanisław Lem · 1968

  2. No. 32 on this list. Arrow of God

    Chinua Achebe · 1964

    Taught in schools: CSEC English B – Caribbean Examinations Council

    Included in: Heinemann African Writers Series

  3. No. 33 on this list. Cronopios and Famas

    Julio Cortázar · 1962

    Taught in schools: Literatura, Diseño Curricular – Provincia de Buenos Aires (Argentina), UNAM Escuela Nacional Preparatoria – programas de Literatura (Mexico)

  4. No. 34 on this list. The Public Burning

    Robert Coover · 1977

  5. No. 35 on this list. The Winding Stair

    William Butler Yeats · 1933

  6. No. 36 on this list. The Cyberiad

    Stanisław Lem · 1965

  7. No. 37 on this list. The Secret Agent

    Joseph Conrad · 1907

    Taught in schools: WJEC/Eduqas GCSE and A-level English Literature (UK)

  8. No. 38 on this list. 10:04

    Ben Lerner · 2014

  9. No. 39 on this list. The Year of the Death of Ricardo Reis

    José Saramago · 1984

    Taught in schools: Portuguese secondary literature (Portugal)

  10. No. 40 on this list. The Man Without Qualities

    Robert Musil · 1930

    Included in: Bokklubben World Library

41–50 · 112 hours
  1. No. 41 on this list. Invitation to a Beheading

    Vladimir Nabokov · 1936

  2. No. 42 on this list. Jacques the Fatalist and His Master

    Denis Diderot · 1796

    Included in: Bokklubben World Library

  3. No. 43 on this list. The Man in the High Castle

    Philip K. Dick · 1962

  4. No. 44 on this list. Burger's Daughter

    Nadine Gordimer · 1979

  5. No. 45 on this list. Family Ties

    Clarice Lispector · 1960

  6. No. 46 on this list. The Complete Stories

    Clarice Lispector

  7. No. 47 on this list. The Autumn of the Patriarch

    Gabriel García Márquez · 1975

  8. No. 48 on this list. Cancer Ward

    Aleksandr Solzhenitsyn · 1968

  9. No. 49 on this list. Quincas Borba

    Machado de Assis · 1891

    Included in: Biblioteca Ayacucho, UNESCO Collection of Representative Works

  10. No. 50 on this list. The Sailor Who Fell from Grace with the Sea

    Yukio Mishima · 1963

51–60 · 112 hours
  1. No. 51 on this list. Poor Folk

    Fyodor Dostoevsky · 1846

    Taught in schools: Kazakh literature curriculum (Kazakhstan)

  2. No. 52 on this list. The Lost Steps

    Alejo Carpentier · 1953

  3. No. 53 on this list. The Thief and the Dogs

    Naguib Mahfouz · 1961

    Taught in schools: Moroccan secondary Arabic literature (Morocco)

  4. No. 54 on this list. A Number

    Caryl Churchill · 2002

  5. No. 55 on this list. The Counterfeiters

    André Gide · 1925

  6. No. 56 on this list. Stories of Your Life and Others

    Ted Chiang · 2002

  7. No. 57 on this list. A Fable

    William Faulkner · 1955

  8. No. 58 on this list. Mastro-don Gesualdo

    Giovanni Verga · 1889

    Included in: UNESCO Collection of Representative Works

  9. No. 59 on this list. The Sea, The Sea

    Iris Murdoch · 1978

  10. No. 60 on this list. Worstward Ho

    Samuel Beckett · 1983

61–70 · 101 hours
  1. No. 61 on this list. Today I Wrote Nothing

    Daniil Kharms

  2. No. 62 on this list. Bouvard and Pécuchet

    Gustave Flaubert · 1881

  3. No. 63 on this list. Human Acts

    Han Kang · 2014

  4. No. 64 on this list. The Guyana Quartet

    Wilson Harris · 1985

  5. No. 65 on this list. Palace of the Peacock

    Wilson Harris · 1960

  6. No. 66 on this list. Ninety-Three

    Victor Hugo · 1874

  7. No. 67 on this list. Jack

    Marilynne Robinson · 2020

  8. No. 68 on this list. The Universal Baseball Association, Inc., J. Henry Waugh, Prop.

    Robert Coover · 1968

  9. No. 69 on this list. The Book of the New Sun

    Gene Wolfe · 1980

  10. No. 70 on this list. The Mysterious Stranger

    Mark Twain · 1916

71–80 · 271 hours
  1. No. 71 on this list. The Clown

    Heinrich Böll · 1963

  2. No. 72 on this list. Woman on the Edge of Time

    Marge Piercy · 1976

  3. No. 73 on this list. The Hours

    Michael Cunningham · 1999

  4. No. 74 on this list. All the Names

    José Saramago · 1997

  5. No. 75 on this list. Baron Wenckheim's Homecoming

    László Krasznahorkai · 2016

  6. No. 76 on this list. Omensetter's Luck

    William Gass · 1966

  7. No. 77 on this list. The Trilogy

    Henryk Sienkiewicz

  8. No. 78 on this list. The Demolished Man

    Alfred Bester · 1953

  9. No. 79 on this list. The Sheltering Sky

    Paul Bowles · 1949

  10. No. 80 on this list. Parade's End

    Ford Madox Ford · 1928

81–90 · 105 hours
  1. No. 81 on this list. Girl with Curious Hair

    David Foster Wallace · 1989

  2. No. 82 on this list. An Artist of the Floating World

    Kazuo Ishiguro · 1986

  3. No. 83 on this list. Kaddish for an Unborn Child

    Imre Kertész · 1990

  4. No. 84 on this list. A Happy Death

    Albert Camus · 1971

  5. No. 85 on this list. Septology

    Jon Fosse · 2019

  6. No. 86 on this list. The Reprieve

    Jean-Paul Sartre · 1945

  7. No. 87 on this list. Poor Things

    Alasdair Gray · 1992

  8. No. 88 on this list. The World Goes On

    László Krasznahorkai · 2018

  9. No. 89 on this list. Regeneration

    Pat Barker · 1991

    Taught in schools: AQA GCSE and A-level English Literature (UK)

  10. No. 90 on this list. Soul Mountain

    Gao Xingjian · 1990

91–100 · 106 hours
  1. No. 91 on this list. Bluets

    Maggie Nelson · 2009

  2. No. 92 on this list. 62: A Model Kit

    Julio Cortázar · 1968

  3. No. 93 on this list. Smoke

    Ivan Turgenev · 1867

  4. No. 94 on this list. The Sirens of Titan

    Kurt Vonnegut · 1959

  5. No. 95 on this list. Death with Interruptions

    José Saramago · 2005

  6. No. 96 on this list. By the Sea

    Abdulrazak Gurnah · 2001

  7. No. 97 on this list. Red Mars

    Kim Stanley Robinson · 1993

  8. No. 98 on this list. Carpentaria

    Alexis Wright · 2006

  9. No. 99 on this list. Pincher Martin

    William Golding · 1956

  10. No. 100 on this list. The Honorary Consul

    Graham Greene · 1973

About this list

These 100 books are the highest-scoring eligible challenging books about philosophy and ideas currently in the catalogue. About 1,294 hours of reading in all. Difficulty runs from 68 to 75 out of 100 for the middle half of the list; the summit is 62: A Model Kit at 87.

This list is ranked by literary regard, with a consistent order for equal scores. Membership follows authors and co-authors, not translators or editors. A book is here when ReadingRate files it under Philosophy & Ideas as one of its primary reading domains, at a confidence of 0.8 or more. Catalogue coverage and the historical canon both limit what this list can represent.

When we matched the Canons dataset to our catalogue in October 2026, our canonical-status scores rose with the number of school curricula, publisher series and lists in it that cite a work: the median score was 72 for books one such source cites, 84 at two, 88 at three, 92 at four and 93 at five or more. Prizes are left out of that count. Outside the state curricula, the dataset’s sources choose mostly from what has been translated into English or French, so it is a weaker check on other literatures. Source: Canons (Andrew Piper), CC BY 4.0

Questions people actually ask

What are the best challenging books about philosophy and ideas?
By literary regard, which weighs canonical status, critical standing and influence: Crime and Punishment by Fyodor Dostoevsky, Labyrinths by Jorge Luis Borges, Antony and Cleopatra by William Shakespeare, Utopia by Thomas More and Troilus and Criseyde by Geoffrey Chaucer. ReadingRate ranks 100 such books, each with a difficulty score and a reading-time estimate.
Which challenging books about philosophy and ideas should I read first?
Start from difficulty, not from rank. The most approachable books on this list that still carry top literary regard are The Good Soldier by Ford Madox Ford (about 7 hours), The Burning Plain and Other Stories by Juan Rulfo and Elective Affinities by Johann Wolfgang von Goethe.
What are the shortest of the best challenging books about philosophy and ideas?
Among the top 25, the shortest are The Ones Who Walk Away from Omelas by Ursula K Le Guin (about 40 min), Measure for Measure by William Shakespeare (about 2.8 hours) and Antony and Cleopatra by William Shakespeare (about 2.7 hours), at an average pace of 250 words a minute adjusted for each book's difficulty.
Which of the best challenging books about philosophy and ideas are the established classics?
By canonical status, how firmly a book sits in curricula, anthologies and the canon: The Brothers Karamazov by Fyodor Dostoevsky, Crime and Punishment by Fyodor Dostoevsky, Utopia by Thomas More, Antony and Cleopatra by William Shakespeare and Labyrinths by Jorge Luis Borges.
Can I read any of these challenging books about philosophy and ideas for free?
16 of the 100 open in ReadingRate's reader with a free account, from public-domain editions: Crime and Punishment, Antony and Cleopatra, Troilus and Criseyde, Gulliver's Travels, Troilus and Cressida and 11 more.
How long would it take to read the top ten?
About 152 hours, at an average pace of 250 words a minute adjusted for each book's difficulty: 77 days at two hours a day. Set your own pace on the page and the list's reading times change to it.
How hard are challenging books about philosophy and ideas to read?
Most of this list sits between 68 and 75 on ReadingRate's 100-point difficulty scale, where 40 to 55 is moderate. The summit is 62: A Model Kit at 87. Every entry carries its own score, so a reader can pick a great book at a difficulty they will finish.
How is this list ranked?
On literary-regard data: how canonically established a work is, its critical standing, and its influence on later writing. It is not a readers’ poll, which is why recent bestsellers rarely appear. Membership follows authors and co-authors, not translators or editors. Lists by country, author, period, theme or difficulty keep to literature (fiction, poetry, drama and philosophy), their novels, poems and plays first and their philosophy after them; a list of a kind of book, such as memoir or criticism, keeps every book of that kind. Every list holds at most three works by one author. A book is here when ReadingRate files it under Philosophy & Ideas as one of its primary reading domains, at a confidence of 0.8 or more.