Part HI begins with a critical exploration of Fodor's Language of Thought hypothesis, in which Braddon-Mitchell and Fitzpatrick contend that, when correct views about the nature of psychological explanation are considered, the theoretical necessity for a language of thought tends to disappear. As they emphasize, their position does not imply that Fodor's hypothesis cannot be true, but rather that a prima facie case on its behalf has not yet been made. Zemach differentiates between "internalist" accounts of understanding (that are to be found in the work of Fodor, Dennett, and other functionalists) and "externalist" accounts (that are associated with the work of Davidson, Burge, and other semantical theorists) in defense of a Wittgensteinian conception of mentalistic semantics, which he applies to meanings, sentences, and beliefs. In the first of her papers, Vaina investigates the modular character of visual functions in the human visual cortex. She reviews the computational theory of early visual functions and extends this approach to higher-level capacities, adducing neurological evidence of the existence of two systems in the human species, one for spatial vision and one for object vision. In the second of her papers, Vaina provides an extended case study of a patient suffering from a brain lesion, whose linguistic and general cognitive abilities were unimpaired but whose visual capabilities suffered from specific kinds of limitations that shed light on the relationship between brain structure and mental functions. Hintikka elaborates certain philosophical consequences that attend findings of this kind, suggesting that there is a close connection between his "perspectival vs. public" distinction and Vaina's "where vs. what" distinction, whereby an otherwise abstract analysis gains empirical support. And Weintraub's survey of decision-theoretic epistemology, in which she maintains that epistemic theories based on cognitive utilities confront a dilemma that cannot be readily overcome, brings this special symposium to a stimulating conclusion. J. H. F.