Michael Richard Ayers

The Cambridge History of Seventeenth-Century Philosophy offers a uniquely comprehensive and authoritative overview of early-modern philosophy written by an international team of specialists. As with previous Cambridge histories of philosophy the subject is treated by topic and theme, and since history does not come packaged in neat bundles, the subject is also treated with great temporal flexibility, incorporating frequent reference to medieval and Renaissance ideas. The basic structure of the volumes corresponds to the way an educated seventeenth-century European might have organised the domain of philosophy. Thus, the history of science, religious doctrine, and politics feature very prominently. The narrative that unfolds begins with an intellectual world dominated by a synthesis of Aristotelianism and scholastic philosophy, but by the end of the period the mechanistic or 'corpuscularian' philosophy has emerged and exerted its full impact on traditional metaphysics, ethics, theology, logic, and epistemology.

Philosophers debate whether all, some or none of the represcntational content of our sensory experience is conccptual, but the technical term "concept" has different uses. It is commonly linked more or less closely with the notions of judgdment and reasoning, but that leaves open the possibility that these terms share a systematic ambiguity or indeterminacy. Donald Davidson, however, holds an unequivocal and consistent, if paradoxical view that there are strictly speaking no psychological states with representational or intentional content except the propositional attitudes of language users, since thc source or fundamental bearer of intentionality is the employed sentence. Accordingly he claims that what has content in ordinary sense experience is not sensation, but propositional belief caused, but not justified, by sensation. John McDowell, sharing some ofDavidson's premises,holds a less paradoxical, but (l will argue) equivocal and incoherent view that post-infantile human sensory expcrience must have content in so far as it is what grounds perceptual belief but that this content is itself conceptual or propositional, dependent on language and culture. Reasons are givcn in the present article for rejecting both views, and their common premises. It is argued that perceptual or sensory states have intentional content which is no more conceptual or propositional than the world is. Recognition that perceptual content and conceptual content are, in a certain unsurprising way incommensurable allows for a more realistic understanding of the relationship between Language and the world as we experience it.