Shabbetai Donnolo was a Jewish doctor born in Southern Italy in 913 AD when it was part of the Byzantine Empire. He is best known as the author of a herbal and traditionally as one of the founders of Europe's first medical school at Salerno. However, his medical reputation has overshadowed his cosmological writings, the most important of which is his Sefer Hakhmoni, a title implying Wisdom. As pharmacy and medicine in the tenth century were inextricably...