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c. 325 – 636 AD

John Cassian

c. 360 – 435 AD
Marseilles, France (born in Scythia)

Overview

The "Bridge-Builder." He lived with the Egyptian monks for years before moving to France, bringing their wisdom to the West. His Institutes taught the West how to organize monasteries.

Did You Know?

St. Benedict ordered his monks to read Cassian's Conferences every evening after supper, making him the grandfather of Western monasticism.

Major Writings

The Institutes

A practical manual for the external life of monks (clothing, rules, food). It famously identifies the "Eight Principal Vices" (Gluttony, Lust, Greed, Anger, Sadness, Sloth, Vainglory, Pride)—the list that Gregory the Great later streamlined into the "Seven Deadly Sins."

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The Conferences

A collection of dialogues with the Desert Fathers of Egypt. While The Institutes deals with external behavior, The Conferences deals with the inner battle of the mind and unceasing prayer.

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On the Incarnation of the Lord

A defense of Christ's divinity written at the request of the future Pope Leo the Great to help defeat the Nestorian heresy.

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Historical Context

The Golden Age: Latin (Western) Fathers

The shapers of Western Catholicism and Protestantism.

11 Church Fathers in this era

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Part of The Golden Age: Latin (Western) Fathers