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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.

501–600

The Sixth Century

1 work

c. 500–520

Greek

The Mystical Theology

Pseudo-Dionysius the Areopagite

Five very short chapters stripping away every name given to God, affirmative and negative alike, until the soul is united to the one beyond assertion and denial.

Byzantine · MysticalRead elsewhere

1201–1300

The Thirteenth Century

2 works

1274

Latin

The Profession of Faith of Michael VIII

The Second Council of Lyon

A statement accepting the filioque and papal primacy, submitted by a Byzantine emperor's envoys to secure Western military protection.

Ecumenical · DefinitionRead elsewhere

c. 1275–1282

Greek

On the Union of the Churches

John Bekkos · c. 1225–1297

A patriarch who had once opposed union argues from the Greek fathers themselves that through the Son and from the Son mean the same thing.

Byzantine · TheologyRead elsewhere

1301–1400

The Fourteenth Century

3 works

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

1354–1360s

Greek

The Greek Aquinas

Demetrios Kydones · c. 1324–1398

The Summa contra Gentiles and much of the Summa Theologiae rendered into Greek by a statesman who began learning Latin to read them.

Byzantine · TranslationRead elsewhere

c. 1360

Greek

The Life in Christ

Nicholas Cabasilas · c. 1322–c. 1392

Union with Christ through baptism, chrismation, and the eucharist, written by a layman for laypeople, with no suggestion that the monastic life is required for it.

Byzantine · TheologyRead elsewhere

1401–1500

The Fifteenth Century

4 works

22 November 1439

Latin

The Decree for the Armenians

The Council of Florence

A summary of Catholic teaching for the Armenian church, containing the first conciliar list of exactly seven sacraments with the matter and form of each.

Ecumenical · DecreeRead elsewhere

6 July 1439

Latin

Laetentur Caeli

The Council of Florence

The decree of union between the Greek and Latin churches, settling the filioque, purgatory, papal primacy, and the eucharistic bread — signed by all the Greek delegates but one.

Ecumenical · DecreeRead elsewhere

1439

Greek

The Oration on Union

Basilios Bessarion · 1403–1472

An argument to the Greek delegation at Florence that the Latin and Greek fathers say the same thing about the Spirit in different words, and that union is therefore honest.

Byzantine · OrationRead elsewhere

1438–1444

Greek

The Anti-Union Writings

Mark of Ephesus · 1392–1444

The encyclicals and treatises of the one Greek bishop at Florence who refused to sign the union, on the filioque, purgatory, and the impossibility of agreement by formula.

Byzantine · PolemicRead elsewhere

1501–1600

The Sixteenth Century

2 works

c. 1585–1587

Spanish

The Living Flame of Love

John of the Cross · 1542–1591

A commentary on his own short poem about the soul transformed in God, written in a fortnight for a laywoman who directed a household.

Catholic (Carmelite) · MysticalRead elsewhere

1595–1596

Latin

The Articles of the Union of Brest

The Ruthenian bishops

Thirty-three conditions on which Orthodox bishops of the Polish-Lithuanian commonwealth entered communion with Rome while keeping the Byzantine rite and married clergy.

Byzantine · ArticlesRead elsewhere

1601–1700

The Seventeenth Century

1 work

1616

French

Treatise on the Love of God

Francis de Sales · 1567–1622

A full theology of charity from its natural roots to the highest union, written for people already committed and full of images drawn from beekeeping and gardening.

Western · TheologyRead elsewhere