In the last years of his life, Boethius turned his attention to a profoundly significant yet seemingly different subject theology. He penned four concise yet impactful letters, two addressed to Symmachus and two to their mutual friend, John the Deacon, tackling the pressing theological issues of his time. The first letter to Symmachus, titled How that the Trinity is one God and not three Gods, offers a robust critique of the Arian heresy. The second letter to John, entitled Whether Father, Son, and Holy Spirit may be substantially predicated of Divinity, continues this critical discourse. The final letter, A Treatise against Eutyches and Nestorius, engages with key debates of the era surrounding the nature of Christ. Here, Boethius defends orthodox beliefs against the heresies of Eutyches, who denied the humanity of Christ, and Nestorius, who rejected His divinity. Likely written around 512, this work is one of the most significant contributions to Christological discussions, introducing definitions of Nature and Person that became foundational for later theologians. Boethiuss ability to apply Aristotelian logic to Christian questions not only showcases his philosophical prowess but also marks a pivotal shift in theological methodology. This collection of works, rich in insight and clarity, exemplifies the same intellectual vigor found in his earlier writings on logic, proving that the mind of Boethius, while exploring a different domain, remains consistently profound.