Stephen Langton, later Archbishop of Canterbury and the famous signatory of Magna Carta, was a prominent intellectual, belonging to the first generation of scholars working at the faculty of theology of the nascent University of Paris. The I^Quaestiones Theologiae constitute his chief speculative work. Book III, volume 3, offers a critical edition of 42 disputed questions about ethics. A critical apparatus and rich source notes accompany each text. The edition is preceded by an extensive analysis of Langton's selected ethical theories, concerning, among other issues, mendacity (lying, perjury, hypocrisy, fraud), moral dilemmas (double bind), obedience, and avoiding suffering. In addition, the introduction analyses Langton's discussion of some logical issues, such as I^propositio implicita and ampliatio.

Magdalena Bieniak, Associate Professor, University of Warsaw,Andrea Nannini, Researcher, Istituto di Storia della Teologia, Lugano

Magdalena Bieniak is Associate Professor of Philosophy at the Faculty of Philosophy, University of Warsaw. She read for the PhD in Philosophy at the University of Padua and at the Université de Sorbonne - Paris IV (co-tutelle) in 2008 and obtained habilitation in Philosophy in 2019. She has worked on a number of early-scholastic authors, such as Stephen Langton, Hugh of St-Cher, and Gilbert of Poitiers, as well as on Socinians. Her major publications include The Soul-Body Problem at Paris ca. 1200-1250 (Leuven, 2010), Stephen Langton, Quaestiones theologiae, vol. I (Oxford 2014), co-edited with R. Quinto, and vols. III.1-2 (Oxford 2021-22) co-edited with M. Trepczynski and W. Wciórka, "Individuals as Wholes: Gilbert of Poitiers's Theory of Individuality" in F. Amerini et al., Mereology in Medieval Logic and Metaphysics (Pisa 2019).

Andrea Nannini received his PhD in 2014 and is currently a researcher at the Istituto di Storia della Teologia di Lugano. His research focuses on late medieval metaphysics and theology. He has critically edited John Ripa's Lectura super primum Sententiarum, distinctio secunda (Quaracchi, 2020) and distinctio prima (Quaracchi, 2023). He has authored several studies on Ripa's thought, John Duns Scotus's metaphysical univocity, the theory of divine ideas, and the freedom of the will. He is currently working on so-far unedited authors, such as Pierre Ceffons and Anfredo Gonteri.

Abbreviations and Editorial PoliciesIntroduction1. Overview1.1. Mendacity, M. Trepczynski and M. Bieniak1.2. Perjury and Propositio Implicita, M. Bieniak1.3. Double Bind (Perplexitas), M. Bieniak1.4. The Virtue of Obedience and Related Problems, A. Nannini1.5. Prayer: Ethics of Pursuit and Avoidance, M. Bieniak1.6. Ampliatio and the Desire for Death, M. Bieniak2. Philological Introduction, M. Bieniak2.1. The General Transmission Pattern2.2. Philological Introductions to Selected QuestionsQuaestiones Iuxta IndicemQuaestiones Extra IndicemBibliographyIndex