My interests lie in ancient metaphysics, especially in Aristotle. When I began my dissertation, I intended to write on Aristotle's notion of matter in his Metaphysics Z, but like others before me I found that was perhaps too big a project, or too much for a dissertation. While I was doing what I thought was preparatory work for that project, I found myself instead writing a dissertation on the first book of Aristotle's Physics, and so there I am now. This has led to an interest in scientific explanation, and explanation more generally. I am also interested in a wide range of problems in metaphysics, ancient and modern, and my teaching has helped to nourish my interest in ancient ethics, too.