Sacrae Theologiae Summa - The Triune God - Volume II, Part I - Joseph M. Dalmau

Sacrae Theologiae Summa: The Triune God, Volume II, Part I by Joseph M. Dalmau is a scholastic manual in dogmatic theology that presents a systematic exposition of the mystery of the one God in three Persons. It develops Trinitarian doctrine within a Thomistic metaphysical framework, emphasizing precision in theological language and conceptual distinctions.

A central concern of the volume is the internal life of the Trinity. Dalmau explains the divine processions, relations, and personal distinctions, showing how the Father, Son, and Holy Spirit are truly distinct persons while remaining one identical divine essence.

The work also addresses the historical articulation of Trinitarian dogma and the refutation of classical heresies, such as Arianism and Sabellianism, while clarifying the theological analogies used to approach the mystery. Overall, it provides a structured scholastic treatment of the Triune God as the foundation of Christian doctrine.