The Open Access version of this book, available at http://www.tandfebooks.com/doi/view/10.4324/9781351116022, has been made available under a Creative Commons Attribution-Non Commercial-No Derivatives 4.0 licence. DOI  https://doi.org/10.4324/9781351116022 Published with the support of the Swiss National Science Foundation. This volume is an investigation of how Augustine was received in the Carolingian period, and the elements of his thought which had an impact on Carolingian ideas of 'state', rulership and ethics. It focuses on Alcuin of York and Hincmar of Rheims, authors and political advisers to Charlemagne and to Charles the Bald, respectively. It examines how they used Augustinian political thought and ethics, as manifested in the De civitate Dei , to give more weight to their advice. A comparative approach sheds light on the differences between Charlemagne's reign and that of his grandson. It scrutinizes Alcuin's and Hincmar's discussions of empire, rulership and the moral conduct of political agents during which both drew on the De civitate Dei , although each came away with a different understanding. By means of a philological-historical approach, the book offers a deeper reading and treats the Latin texts as political discourses defined by content and language.