 John Duns Scotus (1265–1308) worked in Oxford, Paris, and Cologne. Living roughly a generation before Ockham, Scotus was a follower of Aristotle, and as with many of his time, Avicenna too had a profound impact on the development of his thought. As far as skepticism is concerned, Scotus is unconvinced by Henry’s anti-skeptical arguments, but he thinks the threat of skepticism dangerous enough that he devotes considerable attention to arguing against the problem. Adams (1987) and Pickavé (2010) discuss his position in connection with skepticism.