The creation and justification of knowledge in antiquity and the Middle Ages gives rise to several questions: How is `foreign' knowledge given authority? What are the mechanisms of legitimation? Are the ascriptions by the sources concerning the origin of knowledge as either inherited or borrowed traceable and comprehensible or artificial and unfounded? Does transferred knowledge create new concepts during the act of borrowing?
To answer these questions, the volume is divided into three parts: After a section on theoretical and methodological considerations, two thematic sections deal with a special field of knowledge, i.e. on concepts of the moon and of the end of the world in fire.



Jochen Althoff (Prof. Dr.), born in 1962, is a professor of ancient Greek at the University of Mainz. He has published on ancient science and philosophy, especially Aristotle, and organizes the yearly meeting of the research unit Ancient Science and its Reception and co-edits a publication series of the same name. Since 2013, he has been vice-speaker of the research training group Early Concepts of Man and Nature.
Dominik Berrens (Dr.), born in 1987, studied classical philology and biology at the University of Freiburg. From 2013 to 2017, he was part of the research training group Early Concepts of Man and Nature at the University of Mainz, where he received his doctorate with a dissertation on social insects in antiquity in 2016. Since 2017, he has been a postdoctoral researcher in the project NOSCEMUS - Nova Scientia: Early Modern Science and Latin funded by the European Research Council at the University of Innsbruck. His research interests lie in pre-modern scientific texts and ancient drama.
Tanja Pommerening (Prof. Dr.), born in 1969, holds degrees in egyptology, pharmacy and history of sciences. She has been a professor of egyptology at the University of Mainz since 2010. Since 2013, she has been spokeswoman of the research training group Early Concepts of Man and Nature. In addition to the overarching questions of universals, cultural specificities and knowledge transfer, her research focuses on the language and culture of Ancient Egypt, ancient Egyptian medicine and science, and the history of knowledge.