Theologia moralis

work by Liguori

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July 14, 2026

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Theologia moralis is a significant work by St. Alphonsus Liguori, an Italian moral theologian and founder of the Redemptorists. Published in 1748, it is considered a principal exponent of equiprobabilism, a system for guiding conscience when uncertain about moral obligations.1

Moral theology is a branch of Christian theology focused on the principles of human behavior in light of divine revelation. It differs from philosophical ethics by relying on revelation rather than solely on reason. Liguori's work, along with his other writings on devotional and dogmatic subjects, has been translated into numerous languages and remains influential.231

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St. Alphonsus Liguori
…best represented by his celebrated Theologia moralis (1748); ascetical and devotional writings, including Visits to the Blessed Sacrament, The True Spouse of Jesus Christ (for nuns), Selva (for priests), and The Glories of Mary, the latter of which became one of the most widely used manuals of devotion to the…
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…best represented by his celebrated Theologia moralis (1748); ascetical and devotional writings, including Visits to the Blessed Sacrament, The True Spouse of Jesus Christ (for nuns), Selva (for priests), and The Glories of Mary, the latter of which became one of the most widely used manuals of devotion to the…
Read More