Gnosticism
Dualistic and elitist systems opposed creation and public apostolic doctrine.
Sectae et motus
Historical Heresies
The earliest and medieval deviations show recurring patterns: Christ reduced, authority privatized, creation despised or sacramental realism weakened.
Dossier overview
Historical heresies are treated before later sects because they show how the Catholic Church judged doctrine publicly by Scripture, Tradition, councils and Fathers.
History and Origins
Arianism
Arius denied the true divinity of the Son; Nicaea answered with homoousios.
Nestorianism
A Christological division endangered the unity of the Person of Christ.
Cathars and Waldensians
Medieval movements raised doctrinal, sacramental and ecclesial conflicts.
Founder
Historical heresies usually do not have one single founder. They arise around teachers, schools, political protection, social reaction and selective biblical interpretation.
Doctrine
The common pattern is reduction: the mystery of Christ, the Church, creation, grace or the sacraments is narrowed against the fullness of the apostolic rule.
Writings
Non-Catholic writings are listed as sources. Where legally possible, full texts or excerpts can later become individual library pages.
Catholic Refutation
Christology
Errors about Christ damage the Gospel because salvation depends on the real Incarnation, Cross and Resurrection.
Councils and Fathers
Creeds, councils and Fathers show public continuity against private reinterpretation.
Sacramental realism
Many heresies weaken matter, body, priesthood or the visible sacramental order.
Forum
Objections and replies for this dossier can be collected here by topic.
Open the forum for concrete objections and source-linked Catholic replies.
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