Brian Epstein received his PhD in philosophy from Stanford University, his master's in philosophy from Oxford University, and graduated summa cum laude with an AB in philosophy from Princeton University. His research interests include philosophy of social science, metaphysics, and philosophy of language, focusing in particular on issues in the theory of reference and the ontology of social kinds. He also has interests in conceptual schemes, the philosophy of music, and the philosophy of economics. Between degree programs, he worked at a number of technology startups and consulting firms. His interests outside of philosophy include music and sound production, hiking, and photographing ducks.