In De Anima III.8 Aristole asserts that "the soul is in a sense all things" because it becomes whatever is thought or perceived. Yet the relationship between the soul and an object of perception or thought is most likely not one of numerical identity. As Aristotle says, "The stone is not in the soul but, rather, form" . Now if soul-object relations cannot be explained solely in terms of numerical identity, it is incumbent upon Aristotle to state what other sense (...) of identity is being invoked. According to Aristotle, the relation obtaining between the soul and an object of perception or thought is one of representational isomorphism; e.g., just as middle-C may be instantiated both in a piano and in a tuning fork, the salient features of an object of perception or thought may be instantiated in the soul as well as in the extra-mental world. (shrink)