pt. 1. Realism and its critics. The non-cognitivist challenge
The constructivist challenge
pt. 2. Moral metaphysics. Ethical non-naturalism
Supervenience and causation
pt. 3. Moral motivation. Motivational humeanism
Motivational judgement internalism
pt. 4. Moral reasons. Reasons internalism
Rationality and disagreement
pt. 5. Moral knowledge. Moral skepticism
The justification of moral principles
The justification of verdictive beliefs.