The article explores Neo-Scholasticism, a period in Catholic theology which, normally
nowadays, attracts little attention. The publication of Leo XIII’s encyclical Aeterni Patris, in 1879, and its effects on theology are studied with particular reference to sacramental theology. The main exponents of the Neo-Scholastic movement (e.g. Kleutgen, Mercier) and their contributions are highlighted. The article then proceeds to an in-depth analysis of the treatise De sacramentis in genere as presented by leading theologians, such as Franzelin, Billot, and van Noort. The central issue of causality is investigated. Finally, the article reflects briefly on the positive confluence between Neo-Scholasticism and Ressourcement in the first decades of the 20th century.peer-reviewe
