Reviewed by: Jog az Egyház hagyományában es életében by Péter Erdő Richard Bona Jog az Egyház hagyományában es életében, by Péter Erdő. Budapest: Szent István Társulat, 2016. Pp. 7–488. For the twentieth anniversary of the founding of the Institute of Canon Law (ad instar facultatis) of the Pázmány Péter Catholic University (Budapest), His Eminence Péter Cardinal Erdő compiled a collection of his most recent works under the title Jog az Egyház hagyományában es életében (Law in the Tradition and Life of the Church). The book is written in Hungarian but includes tables of contents for Italian and English readers as well. However, the English version does not always employ the correct canonical idiom. The volume contains nineteen studies—all previously published articles and lectures—with the oldest being from 2004. Thirteen of these works have appeared also in other languages: twelve in Italian and one each in German and English. For the publication of this volume, several articles have been updated, modified, or enlarged. Borrowing from the structure employed by the 1983 Code of Canon Law, Cardinal Erdő organizes his work into five areas: fundamental concepts and general norms, juridical organization of the People of God, [End Page 235] sanctifying function of the Church, questions of ecclesiastical penal law, and procedural problems. Within these areas he devotes attention to the theology of canon law, unjust laws and religious liberty, the Church-State relationship, and the notions of ecclesiastical office and administrative law. He also explores the possibilities of advancement of ecumenism through the 1983 code’s conceptual elements and the potential of the principle of reciprocity not only with other Churches sui iuris, but also with other Christian denominations. The collection of these works gives evidence of Erdő’s predilection for historical analysis of different canonical elements. Thus, in this volume, one finds examination of the canonization of St. Elizabeth of Hungary, healthcare issues in medieval canon law, study of the requirement to know the language of the faithful for the appointment of a pastor, the canonical punishment of archers and arbalesters, the role of primates in the Western Church, the history of ecclesial affiliation of the city of Budapest, and the canonical investigation of the impeded see of the Archdiocese of Esztergom in the wake of Cardinal Mindszenty’s arrest. Concerning the ius vigens, Cardinal Erdő comments on papal primacy, the application of rule thirteen of the Regula iuris in the present canon law, reform of the Eastern liturgies after the Second Vatican Council, and the motu proprio Mitis Iudex Dominus Iesus. The articles and lectures of Jog az Egyház hagyományában es életében demonstrate the breadth of Cardinal Erdő’s canonical research. In an era in which most scientific fields display a pronounced trend toward specialization, works exhibiting polymathic character are rare. Yet, His Eminence still delivers competent and uniquely valuable studies, impressive in range and meticulous in detail. While these virtues could in principle expand interest in the author’s efforts, the present volume, unfortunately, is beneficial only for those who read Hungarian. More serious readers of Cardinal Erdő may find this book helpful as well, as it contains updated and enlarged versions of some of his earlier published work. [End Page 236] Richard Bona Diocese of Cleveland Cleveland, OH Copyright © 2021 The Catholic University of America Press