Gad Freudenthal is a Senior Research Fellow (Emeritus) at the Centre national de la recherche scientifique (CNRS) in Paris. He is the author and editor of several volumes on the history of science in antiquity and in the Middle Ages, especially in Jewish cultures, most recently, Science in the Medieval Hebrew and Arabic Traditions (2005). He is also editor of the journal Aleph: Historical Studies in Science and Judaism.