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The Library

Forty Centuries of Christian Writing

1780 works catalogued century by century, from the literature the Bible was written among to the present — each with a note on what it is, why it lasted, and where to read it.

1301–1400

The Fourteenth Century

95 works

c. 1294–1302

Middle High German

The Talks of Instruction

Die rede der underscheidunge

Meister Eckhart · c. 1260–1328

Table talk for young friars on obedience, detachment, and why a person who has learned to find God in one place will find him everywhere, including in the stable.

Dominican · HomiliesRead elsewhere

1302

Latin

On Ecclesiastical Power

Giles of Rome · c. 1243–1316

An argument that all temporal authority and even all lawful property derive from the pope, so that a ruler outside the church holds nothing rightfully.

Western · Political theoryRead elsewhere

c. 1302–1303

Latin

On Royal and Papal Power

John of Paris · c. 1255–1306

A middle position: kings hold power from the people and not from the pope, church property belongs to the community rather than the pope personally, and a pope may be deposed.

Dominican · Political theoryRead elsewhere

18 November 1302

Latin

Unam Sanctam

Pope Boniface VIII · c. 1230–1303

A bull declaring that there is one church outside which there is no salvation, that both swords are the church's, and that submission to the Roman pontiff is necessary for salvation.

Western · BullRead elsewhere

1305

Latin

The Tree of the Crucified Life of Jesus

Arbor Vitae Crucifixae Iesu

Ubertino da Casale · 1259–c. 1329

A life of Christ that turns into an apocalyptic indictment, identifying two recent popes with the beasts of Revelation and the church that persecutes the Spirituals with Babylon.

Franciscan · PolemicRevelationRead elsewhere

1311–1312

Latin

The Canons of the Council of Vienne

The Council of Vienne

The council that suppressed the Templars, ruled on Franciscan poverty, condemned propositions attributed to the beguines, and ordered chairs of Hebrew, Arabic, and Aramaic in the universities.

Western · CanonsRead elsewhere

c. 1308–1318

Middle High German

The Book of Divine Consolation

Meister Eckhart · c. 1260–1328

Written for a queen in grief: consolation not by softening loss but by arguing that whoever is wholly given over to God cannot be robbed of anything that matters.

Dominican · TreatiseRead elsewhere

c. 1312–1317

Latin

Monarchy

Monarchia

Dante Alighieri · 1265–1321

Three books arguing that a universal empire is necessary for peace, that Rome held its authority by right, and that the emperor receives it from God directly and not through the pope.

Western · Political theoryRead elsewhere

c. 1300–1324

Arabic

The Lamp of Darkness

Misbah al-Zulma

Abu al-Barakat ibn Kabar · d. 1324

An encyclopaedia of Coptic Christianity — doctrine, canon law, liturgy, the calendar, and a catalogue of the church's Arabic and Coptic books.

Coptic · EncyclopaediaRead elsewhere

c. 1308–1320

Italian

The Divine Comedy

Divina Commedia

Dante Alighieri · 1265–1321

A poet lost in a dark wood is led down through hell, up the mountain of purgatory, and out through the spheres of heaven, meeting the dead of his own city at every level and arriving at a vision of the love that moves the sun and the other stars.

Medieval Catholic · PoetryRevelationFull text

c. 1300–1327

Middle High German

The German Sermons

Meister Eckhart · c. 1260–1328

Sermons preached to nuns and laypeople on the birth of the Word in the soul, the ground where God and the soul are one, and the counsel to pray God to be rid of God.

Dominican · HomiliesJohnLukeRead elsewhere

c. 1323–1324

Latin

The Conduct of Inquiry into Heretical Depravity

Bernard Gui · c. 1261–1331

An inquisitor's manual describing the beliefs of Cathars, Waldensians, and Spiritual Franciscans, with model interrogations and the sentences appropriate to each.

Dominican · HandbookRead elsewhere

12 November 1323

Latin

Cum Inter Nonnullos

Pope John XXII · c. 1244–1334

A bull declaring it heretical to assert that Christ and the apostles owned nothing whatever, overturning what the Franciscans had been taught to believe for a century.

Western · BullRead elsewhere

c. 1323

Latin

The Sum of Logic

Summa Logicae

William of Ockham · c. 1287–1347

A complete logic built on the claim that only individuals exist and universals are signs in the mind, with the principle that entities should not be multiplied beyond necessity.

Franciscan · LogicRead elsewhere

1324

Latin

The Defender of the Peace

Defensor Pacis

Marsilius of Padua · c. 1275–c. 1342

Authority belongs to the whole body of citizens; the clergy have no coercive power at all; and a general council, not the pope, is the church's highest authority.

Western · Political theoryRead elsewhere

c. 1310–1324

Latin

The Mirror of Human Salvation

Speculum Humanae Salvationis

Anonymous

Each scene of Christ's life paired with three Old Testament or legendary prefigurations, in verse designed to be read alongside pictures.

Western · TypologyRead elsewhere

c. 1305–1330

Greek

Miscellaneous Essays

Semeioseis Gnomikai

Theodore Metochites · 1270–1332

A hundred and twenty essays on philosophy, the limits of knowledge, the vanity of political office, and the author's own fall from power into exile.

Byzantine · EssaysRead elsewhere

1326

Latin

The Defence

Rechtfertigungsschrift

Meister Eckhart · c. 1260–1328

A reply to the inquisitors of Cologne, answering each extracted proposition and insisting that he may have erred but cannot be a heretic, since heresy is a matter of the will.

Dominican · ApologiaRead elsewhere

c. 1328–1330

Middle High German

The Little Book of Eternal Wisdom

Henry Suso · c. 1295–1366

A dialogue between the Servant and Eternal Wisdom, moving from the sweetness of divine love to the passion, and including a hundred short meditations for daily use.

Dominican · DialogueFull text

1322–1332

Latin

The Literal Postill on the Whole Bible

Postilla Litteralis

Nicholas of Lyra · c. 1270–1349

A commentary on the entire Bible insisting on the literal sense first, and drawing throughout on Rashi and other Jewish exegetes whose Hebrew he could read.

Franciscan · CommentaryRead elsewhere

c. 1332–1334

Latin

The Work of Ninety Days

Opus Nonaginta Dierum

William of Ockham · c. 1287–1347

A line-by-line refutation of the papal bulls on Franciscan poverty, written in three months, arguing that a pope who teaches heresy forfeits his office.

Franciscan · PolemicRead elsewhere

c. 1334–1347

Latin

The Dialogue

William of Ockham · c. 1287–1347

An immense unfinished dialogue on heresy, papal error, and where authority in the church finally rests — canvassing every position without always declaring for one.

Franciscan · DialogueRead elsewhere

1336

Latin

The Ascent of Mont Ventoux

Francesco Petrarca · 1304–1374

A letter describing a climb up a mountain for no reason but the view, and the shock of opening Augustine's Confessions at the summit on a passage rebuking such curiosity.

Western · LetterRead elsewhere

c. 1334–1336

Latin

Commentary on the Book of Wisdom

Robert Holcot · c. 1290–1349

A commentary crammed with classical anecdote, moral tales, and cheerful digression, and unusually generous about what pagans could know of God.

Dominican · CommentaryRead elsewhere

c. 1338–1341

Greek

The Triads in Defence of the Holy Hesychasts

Gregory Palamas · 1296–1359

A defence of monks who claimed to see the uncreated light, distinguishing God's unknowable essence from the energies by which he is genuinely shared.

Byzantine · TheologyRead elsewhere

c. 1300–1350

Latin

Meditations on the Life of Christ

Meditationes Vitae Christi

Pseudo-Bonaventure

The gospel expanded with imagined detail — what Mary said to the midwife, how Joseph carried the child — and instructions to picture each scene as though present.

Franciscan · DevotionalLukeMatthewRead elsewhere

c. 1338–1341; survives in fragments

Greek

Against the Messalians

Barlaam of Calabria · c. 1290–1348

An attack on monks who claimed to see divine light with bodily eyes, dismissing their breathing techniques and accusing them of an ancient heresy.

Byzantine · PolemicRead elsewhere

c. 1340

Latin

The Universal Treatise

Exigit Ordo Executionis

Nicholas of Autrecourt · c. 1299–1369

An argument that nothing can be demonstrated beyond the principle of non-contradiction — not causation, not substance, not other minds — leaving only probability.

Scholastic · PhilosophyRead elsewhere

1340

Greek

The Hagioritic Tome

Gregory Palamas and the monks of Athos

A declaration signed by the leading monks of Mount Athos affirming that the light of Tabor was uncreated and that the saints genuinely participate in God.

Byzantine · ManifestoRead elsewhere

c. 1330–1361

Middle High German

The Sermons

Johannes Tauler · c. 1300–1361

Preaching on the ground of the soul, on suffering as the shortest road, and on the ordinary work of a cook or a farmhand as no less a vocation than choir.

Dominican · HomiliesRead elsewhere

c. 1335–1340

Middle Dutch

The Spiritual Espousals

Die geestelike brulocht

Jan van Ruusbroec · 1293–1381

Three lives — active, interior, and contemplative — built on the cry that the bridegroom comes and we must go out to meet him, ending in a union that does not abolish the distinction between God and the soul.

Western Monastic · MysticalMatthewRead elsewhere

c. 1343

Latin

The Fire of Love

Incendium Amoris

Richard Rolle · c. 1300–1349

A hermit's account of the physical warmth, sweetness, and song he experienced in prayer, described with a confidence that irritated more cautious contemporaries.

Western · MysticalFull text

1343–1344

Latin

Commentary on the Sentences

Gregory of Rimini · c. 1300–1358

A commentary combining Ockham's logic with a severe Augustinianism on grace, and holding that unbaptised infants suffer real punishment.

Scholastic · Systematic theologyRead elsewhere

c. 1344

Latin

On the Cause of God Against Pelagius

Thomas Bradwardine · c. 1300–1349

A mathematician's defence of grace and predestination, arguing more geometrico against contemporaries he thought had made salvation depend on human initiative.

Scholastic · TheologyRomansRead elsewhere

c. 1340–1350

Middle Dutch

The Sparkling Stone

Jan van Ruusbroec · 1293–1381

On the difference between the faithful servant, the secret friend, and the hidden son of God, and on the common life in which contemplation and action are one act.

Western Monastic · MysticalRead elsewhere

c. 1347–1353

Latin

My Secret Book

Secretum Meum

Francesco Petrarca · 1304–1374

An imagined dialogue in which Augustine cross-examines the author about his desire for fame and his love for Laura, and the author declines to be cured.

Western · DialogueRead elsewhere

1348–1349

Middle English

The Form of Living

Richard Rolle · c. 1300–1349

A guide written in English for a woman becoming a recluse, on temptations, on the degrees of love, and on how to keep the heart occupied.

Western · RuleFull text

c. 1333–1348

Old French

The Golden Legend in French

La Légende dorée

Jean de Vignay · c. 1282–c. 1350

Voragine's saints' lives translated into French for the queen, one of the many vernacular versions that carried the collection across Europe.

Western · TranslationRead elsewhere

c. 1340–1360

Middle English

The Prick of Conscience

Anonymous

Nine thousand lines on human wretchedness, death, purgatory, doomsday, and the pains of hell and joys of heaven, written for readers with no Latin.

Western · PoetryRead elsewhere

c. 1349–1350

Greek

The One Hundred and Fifty Chapters

Gregory Palamas · 1296–1359

A compressed summary of his whole theology — cosmology, the human person as image, the distinction of essence and energies — in short numbered chapters.

Byzantine · AphorismsRead elsewhere