Abstract

Descartes’ circle has been extensively discussed, and I do not wish to add another paper to that literature. Rather, I use the circle to facilitate our understanding of two types of scepticism and the proper attitude to them. Descartes’ text is especially apt for this purpose, because a case can be made for attributing to him both types. Although I will touch on the interpretative question, that is not my main aim. My contention is that one brand - whether or not it is the one that Descartes favoured - should be taken very seriously, and Descartes’ failure to respond to it non circularly cannot be met with equanimity.