Introduction Lloyd P. Gerson; 1. Plato and Aristotle in the enneads Eric D. Perl; 2. Plotinus, gnosticism, and christianity Sebastian Gertz; 3. From Plotinus to Proclus Marije Martijn; 4. The one as first principle of all Gwenaëlle Aubry; 5. Plotinus and the theory of forms Mauro Bonazzi; 6. Plotinus on number Svetla Slaveva-Griffin; 7. Plotinus on categories Michael Griffin; 8. Plotinus on knowledge Christian Tornau; 9. The embodied soul Damian Caluori; 10. Self-knowledge and self-reflexivity Pauliina Remes; 11. Eternity and time Riccardo Chiaradonna; 12. Composition of sensible bodies D. M. Hutchinson; 13. Nature: Plotinus' fourth hypostasis? James Wilberding; 14. Matter and evil Jan Opsomer; 15. Virtue and happiness Miira Tuominen; 16. Plotinus on providence and fate Christopher Isaac Noble; Bibliography; Index Locorum; General Index.