Intuition and Causality: Ockham’s Externalism Revisited

Abstract

Content externalism, as defended by Hilary Putnam, Tyler Burge and several others, is the thesis that the content of our thoughts at a given moment is not uniquely determined by our internal states at that moment. In its causalist version, it has often been presented as a deep revolution in philosophy of mind. Yet a number of medievalists (e.g. Peter King, Calvin Normore, Gyula Klima, and myself) have recently stressed the presence of significant externalist tendencies in late-medieval nominalism, especially in William of Ockham. Now this interpretation has been cleverly challenged in the case of Ockham by Susan Brower-Toland in 2007, with arguments focusing upon Ockham’s theory of intuitive cognition (precisely where the externalist reading had seemed to be the most secured). The present paper is a reply to this challenge. I first summarize the case for seeing Ockham’s theory of intuitive cognition as a causal and externalist approach, and then critically review Brower-Toland’s arguments against it. The whole discussion, as it turns out, sheds new light upon Ockham’s conception of causality and natural order.