About the Authors.- Foreword; Francisco Jos? Contreras.- 1. Aristotle on Practical Rules, Universality, and Law; Jes?s Vega.- 2. Cosmopolitanism and Natural Law in Cicero; Fernando Llano.- 3. Natural Law: Autonomous or Heteronomous? The Thomistic Perspective; Diego Poole.- 4. The Competing Sources of Aquinas' Natural Law: Aristotle, Roman Law and the Early Christian Fathers; Anna Taitslin.- 5. God and Natural Law: Reflections on Genesis 22; Matthew Levering.- 6. Natural Right and Coercion; Ana Marta Gonz?lez.- 7. Natural Law and the Phenomenological Given; Marta Albert.- 8. Perspectivism and Natural Law; Ignacio S?nchez C?mara.- 9. International Law and the Natural Law Tradition: The Influence of Verdross and Kelsen on Legaz Lacambra; Mar?a El?segui.- 10. Natural Law Theory in Spain and Portugal; Antonio E. P?rez Lu?o.- 11. Is the "New Natural Law Theory" Actually a Natural Law Theory?; Francisco Jos? Contreras.- 12. Alasdair MacIntyre on Natural Law; Rafael Ramis-Barcel?.- 13. Dworkin and the Natural Law Tradition; Mar?a Lourdes Santos.- 14. Public Reason, Secularism, and Natural Law; Iv?n Garz?n.