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The Library

Forty Centuries of Christian Writing

1774 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.

401–500

The Fifth Century

2 works

c. 450–460

Latin

The Confession

Confessio

Patrick · 5th century

A defence written in awkward, unschooled Latin by a former slave who returned to convert the people who had kidnapped him, answering British churchmen who questioned his fitness.

Celtic · AutobiographyRead elsewhere

c. 450–460

Latin

Letter to the Soldiers of Coroticus

Patrick · 5th century

An open excommunication of a British warlord whose men had killed and enslaved newly baptised Irish Christians, demanding their return.

Celtic · LetterRead elsewhere

501–600

The Sixth Century

5 works

c. 525–550

Latin

The Penitential of Finnian

Finnian · 6th century

A tariff of penances matching each sin with its remedy, and prescribing that contraries be cured by contraries — the greedy to give, the angry to be patient.

Celtic · PenitentialRead elsewhere

c. 570–600; attribution traditional

Latin

Altus Prosator

Attributed to Columba · 521–597

An abecedarian hymn running from the Trinity before creation through the fall of the angels to the last judgement, in dense and deliberately difficult Latin.

Celtic · PoetryRead elsewhere

c. 590–600

Latin

The Monastic Rule and Penitential

Columbanus · c. 543–615

A severe Irish rule for the monasteries he founded across Gaul and Italy, paired with a penitential assigning a specific penance to each named sin.

Celtic · RuleRead elsewhere

c. 597

Old Irish

The Elegy of Colum Cille

Amra Choluim Chille

Dallán Forgaill

A lament for Columba composed at his death in language so compressed and archaic that medieval Irish scribes had to gloss almost every word. He studied the books of Solomon, it says, and Ireland is a harp without its string.

Celtic · PoetryProverbsEcclesiastesPsalmsRead elsewhere

c. 595–613

Latin

The Letters

Columbanus · c. 543–615

Letters to three popes and to his own monks, defending the Irish Easter calculation and addressing the bishop of Rome with startling directness.

Celtic · LettersRead elsewhere

601–700

The Seventh Century

10 works

c. 632–633

Latin

Letter on the Paschal Controversy

Cummian · 7th century

An Irish abbot explains why, after a year shut in with the computistical texts, he has abandoned the Irish Easter reckoning for the Roman one.

Celtic · LetterRead elsewhere

c. 639–643

Latin

The Life of Columbanus

Jonas of Bobbio · 7th century

The life of the Irish founder of Luxeuil and Bobbio, written a generation later by a monk of his own house, including his quarrel with the Frankish court.

Western · BiographyRead elsewhere

c. 650

Latin

The Penitential of Cummean

Cummean

A tariff of penances arranged under the eight principal vices taken from Cassian, prescribing a measured remedy for each sin by kind, duration, and the offender's rank — with contraries applied to contraries as a physician treats disease.

Celtic · PenitentialJames1 JohnMatthewGalatiansRead elsewhere

c. 650–680

Latin

The Life of Brigid

Cogitosus · 7th century

The life of the abbess of Kildare, full of miracles of provision — butter multiplied, beer for churches — and a description of her double monastery of men and women.

Celtic · BiographyRead elsewhere

c. 680–691

Latin

The Antiphonary of Bangor

Anonymous

A manuscript of hymns, canticles, and collects used at an Irish monastery, including a eucharistic hymn and a hymn on the fire of Pentecost.

Celtic · LiturgyRead elsewhere

c. 670–700

Latin

The Collectanea on Patrick

Tírechán · 7th century

An itinerary of the churches Patrick was said to have founded across the north and west of Ireland, church by church and district by district.

Celtic · BiographyRead elsewhere

c. 680–700

Latin

The Life of Patrick

Muirchú moccu Machtheni · 7th century

Patrick recast as a wonder-worker confronting druids at the court of the high king at Tara, in a contest of fire and darkness.

Celtic · BiographyRead elsewhere

c. 697–700

Latin

The Life of Columba

Adomnán of Iona · c. 624–704

The founder of Iona in three books of prophecies, miracles, and angelic visions, written by his ninth successor from the community's own memories.

Celtic · BiographyRead elsewhere

697

Latin

The Law of the Innocents

Cáin Adomnáin

Adomnán of Iona · c. 624–704

A law promulgated at a synod of Irish and Pictish kings and clergy, imposing heavy penalties for killing or wounding women, children, and clerics in war.

Celtic · LawRead elsewhere

c. 690–725

Latin

The Irish Collection of Canons

Collectio Canonum Hibernensis

Anonymous

Canons arranged by topic and drawn as readily from the Old Testament and Irish synods as from Roman councils, with each source named.

Celtic · Canon lawRead elsewhere

801–900

The Ninth Century

1 work

c. 855

Latin

On Christian Rulers

De Rectoribus Christianis

Sedulius Scottus · 9th century

Advice to a king in alternating prose and verse: choose counsellors well, tax lightly, protect churches, and remember that a ruler's private vices become public disasters.

Celtic · Political theoryRead elsewhere

1001–1100

The Eleventh Century

1 work

c. 1073–1082

Latin

The Chronicle

Marianus Scotus · 1028–1082

A world chronicle by an Irish monk enclosed as a recluse in Germany, arguing that the received date of the incarnation was twenty-two years out.

Celtic · ChronicleRead elsewhere