Professor Liu researches the history and philosophy arising from the developments begun during the scientific revolution, specializing in early modern philosophy and the philosophy and history of science with an emphasis on Descartes’ philosophy of mathematics and physics.
History of Ancient Greek Philosophy (from the pre-Socratics to the Stoics)
History of Western Ethics (from Plato to Nietzsche).
Professor Zheng's research is in ethics, moral psychology, feminist and social philosophy. She has interests in philosophy of race, having written on topics such as racialized sexual preferences, race and aesthetics, and race in pornography.