...it is difficult to predict a chronological timeframe for such a colossal enterprise, even in a culture that (still) justly appreciates classic studies accordingly. The introductory study - substantial and focused on explaining the primary lines of Augustine's thought in this treatise - is a reading key for his entire work: the information concerning dating and the context of the writing is associated with opinions related to the purpose of the treatise or its relations with previous dogmatic works within Greek or Latin Patristic studies. The introductory study also outlines the approach strategy adopted by Augustine; to divide his work between the presentation of intra-Trinity relations and the comparison of the Trinity with the faculties of the human soul; it draws attention to a recurring reference in Augustine's meditations (Gen. I:27: ...ad imaginem Dei creavit illum...) The study also features how the way Augustine understands the role of reason and faith in the knowledge of the transcendental is accompanied by commentaries upon difficult concepts/syntagms (e.g., acies mentis), despite their success among later thinkers.