Abstract

In Belief, Inference, and the Self-Conscious Mind (BISCM), Eric Marcus analyses and responds to a core set of puzzles concerning belief and inference. Most centrally on offer are: an explanation of non-evidential/non-observational doxastic self-knowledge, an explanation of the unintelligibility of Moore-Paradoxical statements, an account of inference (built on an interpretation of the ‘Taking Condition’) fit to solve the Lewis Carroll regress, and an account of what constitutes the unity of the rational mind. Marcus’ answers depend on viewing beliefs as essentially self-known and expressible (through asserting their contents (“P”), or avowing them in a self-ascription (“I believe that P”)). Beliefs are also held to (metaphysically) necessarily exclude their contradictories, and (metaphysically) necessitate their implications. Or at least they do in their paradigm form; when they are ‘in mind’ (an important theoretical concept Marcus makes much use of throughout the book. In this paradigmatic form, Marcus terms them judgments. A significant achievement of BISCM is in how, despite the strength of these and other core commitments (theses variously acknowledged to be “very strong”, “wildly unpopular”, and “singularly anachronistic”, Marcus remains utterly clear-eyed about the need to pass the plausibility test. Nowhere, for example, does he lose sight of the fact that we are “distinctively liable to irrationality”, including to self-deception (which is analysed in terms of both belief and the doxastic self-knowledge which essentially accompanies it on Marcus’ view, being ‘out of mind’). A second, and related strength is in the connections Marcus traces between both expressive and rational mental capacities. This is relatively rare in many of the literatures Marcus is engaging with, especially in the first half of the book. Marcus (building on earlier work) shows how such a synthesis can bear serious fruit, not least in his excellent analysis of Moore-Paradoxical unintelligibility. There is a lot one could say about what is exciting and valuable about each element of Marcus’ discussion. And inevitably for a book so bold and full of riches, there is also a lot one might question about these elements. But as Marcus emphasises, what is on offer is “… not a collection of discrete solutions to putatively separate problems [but] a unified conception of the mind in its theoretical orientation”. And what I want to press him on is a big-picture question: what are the boundaries, and what is the internal structure, of the mind's ‘theoretical’ orientation? For, for all the important and detailed work throughout the book, in which a general conception of believing is suggested, tested, refined, and applied, I don't yet have a stable sense of Marcus’ answers to these questions.