Abstract

The disagreement between Henry of Ghent and John Duns Scotus on divine illumination is usually recognized as a high point in the history of medieval epistemology. Still, there is much obscurity surrounding that debate, including the specific nature of the disagreement between those two thinkers. In this paper, I argue that the point at issue is the relationship between sense and intellect. Henry of Ghent, who posits a close tie between sense and intellect, holds that the senses are the only natural source of both content and certainty for the intellect. By contrast, Duns Scotus holds that, in our natural state, the senses are the source of content but not of certainty for the intellect, which can achieve knowledge of the truth of first principles true by virtue of the meaning of their terms independently of the sensory input it receives.