These volumes gather together the latest research from 40 of the world's most eminent Thomistic theologians and philosophers, in commemoration of the 800th anniversary of Thomas Aquinas's birth. To mark this anniversary, these scholars each prepared a chapter that is an original research study shared at a major international conference in September 2024. The volumes cover a wide range of both philosophical and theological topics, reflecting the breadth of Aquinas's own thought, and will be organized by subject matter. Together, these volumes will provide a compendium of outstanding research on the wide spectrum of Aquinas's thought, which we hope will have enduring value for the field, offering an opportunity to revisit the ongoing importance of the work of Thomas Aquinas today.