Book excerpt: The Companion to John of Salisbury is the first collective study of this major figure in the intellectual and political life of 12th-century Europe to appear for thirty years. Based on the latest research, thirteen contributions by leading experts in the field provide an overview of John of Salisbury’s place in the political debates that marked the reign of Henry II in England as well as of his place in the history of the Church. They also offer a detailed introduction to his philosophical works (Metalogicon, Entheticus), his political thought (Policraticus) and his writing of history (Historia pontificalis). Contributors include Julie Barrau, David Bloch, Karen Bollermann, Cédric Giraud, Christophe Grellard, Laure Hermand-Schebat, Frédérique Lachaud, Constant Mews, Clare Monagle, Cary Nederman, Ronald Pepin, Yves Sassier, and Sigbjørn Sønnesyn.