Christine is a philosopher and Arthur Kingsley Porter Professor of Philosophy at Harvard University. Her main scholarly interests are in moral philosophy and its history; the relation of issues in moral philosophy to issues in metaphysics, the philosophy of mind and the theory of personal identity; the theory of personal relationships; and in normativity in general. She has a naturalistic worldview and is vegan. Christine wrote Fellow Creatures: Our Obligations to Other Animals which argues that Kantian ethics supports animal rights. She has said: "it is right to think that the real source of all value in the world lies in people and animals."