Charles Webster has worked in Oxford since 1969. He has written extensively on science and medicine in the early modern period, most recently, a detailed study of the political and religious outlook of Paracelsus published by Yale University Press.

Dan Stone is Professor of Modern History at Royal Holloway, University of London. He is a historian of ideas, who works on historiographical and philosophical interpretations of the Holocaust, comparative genocide, history of anthropology, and the cultural history of the British Right.