Introduction Part I. Naturalism: Epistemology and Metaphysics: 1. Why naturalism? 2. Four epistemological challenges to ethical naturalism: naturalized epistemology and the first-person perspective 3. Moral naturalism and self-evident moral truths 4. Moral necessities in a contingent world Part II. Referring to Moral Properties: 5. Realist-expressivism: a neglected option for moral realism 6. Milk, honey, and the good life on moral twin earth 7. Referring to moral properties: moral twin-earth, again Part III. Naturalism and Normativity: 8. Moral naturalism and three grades of normativity 9. The ring of gyges: overridingness and the unity of reason 10. The normativity of self-grounded reason.
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