“Philip H. Stump’s latest book is a major contribution to conciliar movement studies, offering a new approach to the Council of Constance’s successful efforts in bringing the Great Western Schism to an end. [...] Stump’s book is richly researched, skilfully written, and interpretatively ambitious. The author demonstrates impressive mastery of multilingual primary sources as well as both recent and established historiography. [...] Students and scholars alike will find in Stump’s study a comprehensive guide and an essential reference for future research on the Council of Constance and ecclesiastical diplomacy in the late Middle Ages.”
Karol Skrzypczak, Université d’Orléans/École Pratique des Hautes Études - Paris Sciences & Lettres, Section des Sciences religieuses. In: Church History, Vol. 94, No. 2 (June 2025), pp. 394–396.

“Ohne Zweifel gehört Stumps Studie zu den wichtigsten Publikationen der neueren Forschung zum Konstanzer Konzil. [Without a doubt, Stump’s study is one of the most important contributions to recent scholarship on the Council of Constance].”
Ansgar Frenken, Ulm University. In: The Medieval Review, 25.03.02.