Introduction Lloyd P. Gerson; 1. Plotinus: the Platonic tradition and the foundation of Neoplatonism Maria Luisa Gatti; 2. Plotinus's metaphysics of the One John Bussanich; 3. The hierarchical ordering of reality in Plotinus Dominic J. O'Meara; 4. On soul and intellect Henry J. Blumenthal; 5. Essence and existence in the Enneads Kevin Corrigan; 6. Plotinus on the nature of physical reality Michael F. Wagner; 7. Plotinus on matter and evil Denis O'Brien; 8. Eternity and time Andrew Smith; 9. Cognition and its object Eyjolfur Kjalar Emilsson; 10. Self-knowledge and subjectivity in the Enneads Sara Rappe; 11. Plotinus: body and soul Stephen R. L. Clark; 12. Human freedom in the thought of Plotinus Georges Leroux; 13. An ethic for the Late Antique sage John M. Dillon; 14. Plotinus and language Frederic M. Schroeder; 15. Plotinus and later Platonic philosophers on the causality of the first principle Cristina D'Ancona Costa; 16. Plotinus and Christian philosophy John Rist.