Thomas Aquinas, born in Roccasecca, Italy, circa 1225, was a Dominican friar and an immensely influential philosopher and theologian in the tradition of scholasticism. Known as Doctor Angelicus, Aquinas is revered as the model teacher for those studying for the priesthood. His most celebrated work, the 'Summa Theologica', is a seminal text in the history of Catholic thought and stands as a pinnacle of medieval scholasticism. This comprehensive compendium of Christian theology is designed to present the entirety of Catholic doctrine and is renowned for its logical rigor and ethical clarity. Aquinas's integration of Aristotelian philosophy with Christian doctrine brought Aristotelian thought into the service of Catholic theology, a synthesis that underpins his reputation as one of the great intellectual giants of the church. His writings exhibit a significant blend of philosophical principle with theological insight, contributing profoundly to the development of metaphysics, natural law theory, and ethics, profoundly influencing both secular and religious intellectual landscapes. Canonized as a saint in 1323, Aquinas's work has endured, remaining a cornerstone of Christian philosophy and theology, and his ideas continue to be studied and revered within the academy and the church today.