This handy booklet contains the Twenty-Four Thomistic Theses, a distillation of Thomas Aquinas' philosophical thought as composed and endorsed by the Roman Catholic Church in the early 20th Century. Though not quoting him directly, these theses seek to be in every way consistent with the Angelic Doctor's thought, and serve as a concise guide to, and summary of, basic Thomistic and Scholastic philosophic positions. This edition derives from the public domain and is intended for study purposes only. Presented in the original Latin together with an English translation by Hugh McDonald, brief explanatory commentary by P. Lumbreras, and cross-references to Aquinas' work from CatholicApologetics.info and Fr. Edouard Hugon, O.P.'s "Les vingt-quatre theses thomistes," any student of Christian philosophy will be greatly assisted by mastering these basic concepts.