In the almost twenty years between the two international conferences on John Wyclif organised by the University of Milan, the most recent of which (September 2016) lies to some extent at the origin of the present volume, an increasing number of studies have been devoted to this great English thinker, theologian and reformer. These have enhanced our knowledge of his philosophical, theological and pastoral work, which had long remained in the shadows. The essays collected in the present book take further steps along this path, through the contribution of a range of specialists who have been called to further reconstruct Wyclif's place in his intellectual milieu from the standpoint of his textual and doctrinal dependence and influence: the collected essays deal with the antecedents of Wyclif's thought, his sources, and his role as a source for countless followers and opponents. The following authors have contributed to the volume: Mark Thakkar, Alessandro Conti, Aurelien Robert, Stephen E. Lahey, Ian Christopher Levy, Sean Otto, Kantik Ghosh, Jindrich Marek and Graziana Ciola.