Philip received his M.A. in philosophy from the University of Missouri and his Ph.D. in philosophy from the University of California, Riverside. He also spent time at Notre Dame and Rutgers before coming to William & Mary. His dissertation defended the view that moral responsibility is incompatible with causal determinism. He continues to spend his time thinking and writing about moral responsibility as well as various questions in ethics, metaphysics and philosophy of religion. His work in these areas has been published in journals such as Ethics, the Australasian Journal of Philosophy, Philosophical Studies, and the Philosophical Quarterly. Philip also spends a fair amount of time thinking about epistemology, though he hasn't written on it yet. Additionally, he enjoys teaching applied ethics courses such as business ethics and bioethics.