Moral Theology (also known as the Theologia Moralis) is a nine-volume work concerning Catholic moral theology written between 1748 and 1785 by Alphonsus Liguori, a Catholic theologian and Doctor of the Church.
This work is not to be confused with Theologia moralis universa ad mentem S. Alphonsi, a 19th-century treatise by Pietro Scavini written in the philosophical tradition of Alphonsus Liguori.
[1] Nine editions of Moral Theology were published during the author's lifetime, the first of which was released in 1748 and consisted of annotations on a treatise called Medulla Theologiae Moralis by Hermann Busenbaum, a 17th-century Jesuit theologian.
[2] Since his death, many further editions have been published, including a partially completed English edition from Mediatrix Press, the first volume of which was released in 2017.
The contents of each volume of Moral Theology are listed broadly below:[3] Mid-19th century and later editions may also include prefatory documents concerning Liguori's life, his beatification and canonization, or his recognition as a Doctor of the Church.