Matteo Esu is a junior scholar finishing his PhD in Paris (LabEx Hastec - Institut de Recherche et d’Histoire des Textes, CNRS). His research focuses on late medieval culture, Latin manuscripts, and the interaction between academic knowledge and popular practice.

• 1 Introduction2 The Halo from the Old Testament to the Thirteenth Century3 The aureola doctorum for University Theologians4 Key Topics on the Doctoral Halo (Thirteenth and Fourteenth Centuries)5 Transformations of the aureola doctorum (Fourteenth and Fifteenth Centuries)6 The Doctoral Halo inside and outside the University (Fifteenth and Sixteenth Centuries)7 John Mair and the Professional Self-Consciousness of the doctor theologiae8 Conclusions: From the History of Theology to Intellectual HistoryAppendix: Edition of Johannes Maior, InIV SententiarumBibliographyIndex of ManuscriptsIndex of Names (pre-1600 ca.)Index of Names (post-1600 ca.)