Foreword / Eugenio Garin
1. Bruno and the Ass: A Long-Deferred Question
2. Myths, Fables, Tales: the "Asinine" Materials
3. The Ass and Mercury: A Key to Coincidentia Oppositorum
4. The Ambiguous Space of Asininity
5. Man and the Ass, between "Bestiality" and "Divinity"
6. Positive Asininity: Toil, Humility, Tolerance
7. Negative Asininity: Idleness, Arrogance, Unidimensionality
8. The Oration of Fortune
9. In the Labyrinth of Truth
10. From Orion to Chiron: Opposing Images of the Religious Cult
11. The Ass in the Guise of the Sileni: Appearances Are Deceptive
12. The Literature of the Ass before Bruno
13. The Entropy of Writing
14. Natural Science and Human Science: A "Nouvelle Alliance."