 Auriol’s role in the history of skepticism is twofold, and he has been discussed in this connection most recently by Tachau (1988), Perler (1994), and Denery (1998). First, he develops an account of intuitive cognition that raises the possibility of sensory illusion; second, he discusses particular cases of sensory illusion in some detail in his Scriptum (prologue, q. 2 and d. 3, q. 14).