A careful historical analysis of the methods and contents of the 'De Trinitate' of Boethius and the 'Expositio' of Aquinas which aims to provide a higher level of understanding of the structure of "Expositio" than is possible with mid-20th-century approaches.

Douglas Hall holds a Ph.D. and STL from the Catholic University of Louvain and has for the past 8 years taught in the European Division of the University of Maryland.