| Notes on the contributors | vii |
| Introduction di Ian Carter e Mario Ricciardi | ix |
| Part I. Normative Analysis and Political Concepts | |
| 1. Fehx Oppenheim's Deontics di Paolo Di Lucia | 3 |
| 2. From Hobbes to Oppenheim: Conceptual Reconstruction as Political Engagement di Terence Ball | 20 |
| 3. Essential Contestability and the Claims of Analysis di Mario Ricciardi | 39 |
| 4. Freedom and Bivalence di Hillel Steiner | 57 |
| 5. Dimensions of Nomic Freedom di Amedeo G. Conte | 69 |
| 6. 'Ought' Implies Tractical PossibiIity' di Ian Carter | 79 |
| 7. Clarifying the Science Wars: the Concept of Scientific Authority di Mark R. Weaver | 96 |