The History of the Decline and Fall of the Roman Empire, by Edward Gibbon

Chapter XLVII: Ecclesiastical Discord

Theological History Of The Doctrine Of The Incarnation.—The Human And Divine Nature Of Christ.—Enmity Of The Patriarchs Of Alexandria And Constantinople.—St. Cyril And Nestorius. —Third General Council Of Ephesus.—Heresy Of Eutyches.— Fourth General Council Of Chalcedon.—Civil And Ecclesiastical Discord.—Intolerance Of Justinian.—The Three Chapters.—The Monothelite Controversy.—State Of The Oriental Sects:—I. The Nestorians.—II. The Jacobites.— III. The Maronites.—IV. The Armenians.—V. The Copts And Abyssinians.