In recent decades, a view of identity I call Sortalism has gained popularity. According to this view, if a is identical to
b, then there is some sortal S such that a is the same S as b. Sortalism has typically been discussed with respect to the
identity of objects. I argue that the motivations for Sortalism about objectidentity apply equally well to event-identity.
But Sortalism about event-identity poses a serious threat to the view that mental events are token identical to physical events:
A particular mental event m is identical with a particular physical event p only if there is a sortal S such that m and p
are both Ss. If there is no such sortal, the doctrine of token-identity is not true. I argue here that we have no good reason
for thinking that there is any such sortal.