Professor Koons is a professor of philosophy at the University of Texas at Austin and specializes in metaphysics and philosophical logic, with special interest in philosophical theology and the foundations of both science and ethics. Professor Moschella is Professor of the Practice, Philosophy, at the McGrath Institute for Church Life based at the University of Notre Dame. Her work spans the fields of ethics, political philosophy, and law and her areas of special expertise include natural law theory, biomedical ethics, and the family.