John Lemos teaches courses in logic, moral philosophy, ancient Greek philosophy, early modern philosophy (Descartes to Kant), and contemporary analytic philosophy. His research interests lie in three main fields of inquiry: philosophy of biology, especially the philosophical implications of evolution; neo-Aristotelian ethics; and the metaphysics of freedom and responsibility. He has published articles in a variety of journals, such as Philosophy of the Social Sciences, The Southern Journal of Philosophy, Metaphilosophy, and Philosophia. His book Commonsense Darwinism was published in 2008 by the Open Court Press. His second book, Freedom, Responsibility, and Determinism: A Philosophical Dialogue, was published by Hackett in 2013.