The Historia Augusta is a collection of thirty imperial biographies about the emperors of the second and third century AD (117-284 to be more precise) with a fine mix of historical fact and imagination. Since he took his PhD on this remarkable text, Diederik Burgersdijk has never managed to stay away from it, and produced many articles and chapters on the subject. He keeps visiting the Historia Augusta colloquia (Nancy 2011, Düsseldorf 2015 and Zürich 2018) since, and wrote several articles in books and journals of broader significance (Arethusa, Talanta, Writing Biography in Greece and Rome).