What makes a good person? This is an old and important question.  Philosophers and theologians through the years have sought an answer including Aristotle, Aquinas, Hume, Kierkegaard, Newman, Nietzsche and others. Alasdair MacIntyre provides a useful analysis of the history of thinking on this question and the current state of moral philosophy in his books After Virtue (1984) and Whose Justice? Which Rationality? (1988). MacIntyre argues that a full understanding of moral philosophy today is constrained by failure to appreciate historical context. He proposes a disquieting scenario to illustrate what he deems the state of affairs today. Imagine, he suggests, through some terrible catastrophe all the scientists in the world…