I work in three primary areas: metaethics, history of philosophy, and philosophy of religion. I've published two books in metaethics, The Normative Web (Oxford, 2007) and Speech and Morality (2007). I also coedited (with Russ Shafer-Landau) Foundations of Ethics (Blackwell, 2007). In the history of philosophy, I've published mostly on Thomas Reid's ethical theory. I co-edited (with Rene van Woudenberg)The Cambridge Companion to Thomas Reid (2004). In philosophy of religion, I work primarily on issues concerning religious practice, especially, liturgy. In 2016, Oxford published a collection of my work on the topic entitledRitualized Faith_.

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