About Interlinea
A reading companion for Latin and Ancient Greek.
Interlinea helps you read real classical texts from the first day. Tap any word to see its dictionary form, what it means here and how it links to the rest of the sentence. Words you save come back in Review just before you would forget them. There are no streaks and no points. Progress means passages read and words known.
Interlinea is a project of Aeterna Institute, a non-profit for classical languages, Great Books and Socratic inquiry, founded in 2025. It's built and maintained by Rumi Elías Calles, the institute's founder.
How the analyses are made
Every word’s lemma, grammar, meaning in context and role in the sentence comes from a language model, asked to follow the Universal Dependencies conventions and then checked by rules: each word is analysed exactly once, every sentence has one root and no loops, and grammar labels must be valid for the language.
Library passages are analysed ahead of time and stored, so they open instantly and never count against a daily limit. Texts you paste are analysed live, sentence by sentence. Verse scansion in the library is worked out by rules first and kept only when it fits the metre.
Analysis can be wrong, especially in Greek. Treat it as a well-informed guess, not an answer key. If something looks off, use Report a mistake on the word card. Reports go straight to the people who maintain the library.
Texts and licences
Library texts come from open digital editions, normalised for reading: Unicode NFC, standard punctuation and no vowel-length marks in running Latin.
Latin
| Text | Licence | Source |
|---|---|---|
Vulgate (Jerome), Genesis 1.1–5 Let There Be Light · Public-domain text (Clementine Vulgate); transcription from Latin Wikisource, CC BY-SA 4.0 | Public-domain text (Clementine Vulgate); transcription from Latin Wikisource, CC BY-SA 4.0 | Source(opens in a new tab) |
Francis Ritchie, Fabulae Faciles, Perseus 1 The Ark on the Sea · Public domain (Ritchie 1884, ed. Kirtland 1903) via Project Gutenberg eBook #8997; vowel-length marks removed | Public domain (Ritchie 1884, ed. Kirtland 1903) via Project Gutenberg eBook #8997; vowel-length marks removed | Source(opens in a new tab) |
Phaedrus, Fabulae 1.1 The Wolf and the Lamb · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: L. Müller, Teubner 1876; speech marks added | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: L. Müller, Teubner 1876; speech marks added | Source(opens in a new tab) |
Eutropius, Breviarium ab urbe condita 1.2 Romulus Builds a City · Public-domain text; transcription from Latin Wikisource, CC BY-SA 4.0 | Public-domain text; transcription from Latin Wikisource, CC BY-SA 4.0 | Source(opens in a new tab) |
Julius Caesar, De Bello Gallico 1.1.1–4 All Gaul · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: T. Rice Holmes, Oxford 1914 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: T. Rice Holmes, Oxford 1914 | Source(opens in a new tab) |
Cornelius Nepos, Hannibal 2.3–5 Hannibal’s Oath · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: A. Fleckeisen & K. Halm, Teubner 1886; sentence capitals and speech marks normalised | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: A. Fleckeisen & K. Halm, Teubner 1886; sentence capitals and speech marks normalised | Source(opens in a new tab) |
Catullus, Carmina 5 A Thousand Kisses · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: E. T. Merrill, Ginn 1893 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: E. T. Merrill, Ginn 1893 | Source(opens in a new tab) |
Cicero, In Catilinam I 1 How Long, Catiline? · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: A. C. Clark, Oxford 1908; sentence capitals restored (Perseus <reg>) | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: A. C. Clark, Oxford 1908; sentence capitals restored (Perseus <reg>) | Source(opens in a new tab) |
Seneca, Epistulae Morales 1.1 Reclaim Your Time · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: R. M. Gummere, Loeb 1917 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: R. M. Gummere, Loeb 1917 | Source(opens in a new tab) |
Ovid, Metamorphoses 1.1–9 Bodies Changed · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: H. Magnus, Perthes 1892 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: H. Magnus, Perthes 1892 | Source(opens in a new tab) |
Virgil, Aeneid 1.1–11 Arms and the Man · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: J. B. Greenough, Ginn 1881 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: J. B. Greenough, Ginn 1881 | Source(opens in a new tab) |
Horace, Odes 1.11 Seize the Day · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: P. Shorey & G. J. Laing, Sanborn 1919 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: P. Shorey & G. J. Laing, Sanborn 1919 | Source(opens in a new tab) |
Pliny the Younger, Epistulae 6.16.4–6 The Cloud over Vesuvius · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; source edition not recorded in the TEI header | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; source edition not recorded in the TEI header | Source(opens in a new tab) |
Tacitus, Annales 1.1 Without Anger or Bias · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: C. D. Fisher, Oxford 1906 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-latinLit; edition: C. D. Fisher, Oxford 1906 | Source(opens in a new tab) |
Ancient Greek
| Text | Licence | Source |
|---|---|---|
John the Evangelist, Gospel of John 1.1–5 In the Beginning Was the Word · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: B. F. Westcott & F. J. A. Hort, 1881 (public-domain text); small-caps opening set in normal case | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: B. F. Westcott & F. J. A. Hort, 1881 (public-domain text); small-caps opening set in normal case | Source(opens in a new tab) |
Aesop, Fabulae (Halm) 33 The Fox and the Grapes · CC BY-SA 4.0. Open Greek and Latin, First1KGreek; edition: K. Halm, Teubner 1872 (fable 33 = Chambry 15) | CC BY-SA 4.0. Open Greek and Latin, First1KGreek; edition: K. Halm, Teubner 1872 (fable 33 = Chambry 15) | Source(opens in a new tab) |
Aesop, Fabulae (Halm) 82 The North Wind and the Sun · CC BY-SA 4.0. Open Greek and Latin, First1KGreek; edition: K. Halm, Teubner 1872 (fable 82 = Chambry 46); two OCR accents corrected | CC BY-SA 4.0. Open Greek and Latin, First1KGreek; edition: K. Halm, Teubner 1872 (fable 82 = Chambry 46); two OCR accents corrected | Source(opens in a new tab) |
Xenophon, Anabasis 1.1.1–3 Two Sons of Darius · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: E. C. Marchant, Oxford 1904 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: E. C. Marchant, Oxford 1904 | Source(opens in a new tab) |
Lysias, On the Murder of Eratosthenes 6–7 A Trusting Husband · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: W. R. M. Lamb, Loeb 1930 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: W. R. M. Lamb, Loeb 1930 | Source(opens in a new tab) |
Plato, Apology 17a–b Socrates Takes the Stand · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: J. Burnet, Oxford 1903 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: J. Burnet, Oxford 1903 | Source(opens in a new tab) |
Herodotus, Histories 1.0 (proem) Lest Great Deeds Fade · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: A. D. Godley, Loeb 1920 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: A. D. Godley, Loeb 1920 | Source(opens in a new tab) |
Homer, Iliad 1.1–7 Sing the Rage · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: D. B. Monro & T. W. Allen, Oxford 1920 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: D. B. Monro & T. W. Allen, Oxford 1920 | Source(opens in a new tab) |
Homer, Odyssey 1.1–10 The Man of Many Turns · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: A. T. Murray, Loeb 1919 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: A. T. Murray, Loeb 1919 | Source(opens in a new tab) |
Euripides, Medea 1–15 If Only the Argo · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: G. Murray, Oxford 1902 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: G. Murray, Oxford 1902 | Source(opens in a new tab) |
Thucydides, History of the Peloponnesian War 1.1.1–3 The Greatest Upheaval · CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: H. Stuart Jones, Oxford 1910 | CC BY-SA 4.0. Perseus Digital Library (Tufts University), PerseusDL/canonical-greekLit; edition: H. Stuart Jones, Oxford 1910 | Source(opens in a new tab) |
Sappho, Fragments 31 (lines 1–16) Equal to the Gods · Ancient text, public domain; constituted text as printed in Wikipedia “Sappho 31” (CC BY-SA 4.0), following Voigt/Campbell; cruces (†) kept | Ancient text, public domain; constituted text as printed in Wikipedia “Sappho 31” (CC BY-SA 4.0), following Voigt/Campbell; cruces (†) kept | Source(opens in a new tab) |
The library holds many more texts than these graded passages. See every text and its licence.
The word-by-word analyses, translations and notes built on these texts are adapted material, shared under CC BY-SA 4.0. You may copy and adapt them, with credit to Interlinea and the source edition, under the same licence.
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Also from Aeterna Institute
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