This 1967 study begins with a brief biography of Plotinus, and goes on to discuss Plotinus' concept of the one, the logos and free will.This 1967 study of Plotinus philosophy was the first comprehensive work in English since Inges The Philosophy of Plotinus was published early in the twentieth century. After a brief biography of Plotinus, Professor Rist discusses, among other topics, Plotinus concept of the one, the logos and free will.This 1967 study of Plotinus philosophy was the first comprehensive work in English since Inges The Philosophy of Plotinus was published early in the twentieth century. After a brief biography of Plotinus, Professor Rist discusses, among other topics, Plotinus concept of the one, the logos and free will.This 1967 study of Plotinus' philosophy was the first comprehensive work in English since Inge's The Philosophy of Plotinus was published early in the twentieth century. After a brief biography of Plotinus, Professor Rist discusses, among other topics, Plotinus' concept of the one, the logos and free will and ends with a discussion of faith in Plotinus and later in Neoplatonism. Perhaps because he is strictly neither a classical nor a medieval philosopher Plotinus' work has been rather neglected in the English-speaking world. Professor Rist has rescued him from this relative obscurity and has indicated some of the ways in which he has influenced both Christian and non-Christian philosophers.Acknowledgements; List of abbreviations; 1. Introduction; 2. A life for the sage; 3. The Plotinian One; 4. The one's knowledge; 5. Beauty, the beautiful and the good; 6. Emanation and necessity; 7. Logos; 8. The sensible object; 9. The descent of the soul; 10. Man's free will' 11. Happiness; 12. The self and others; 13. The originality of Plotinus; 14. A common metaphor; 15. Prayer; 16. Mysticism; 17. Neoplatonic faith; 18. Conclusion; Notes; Bibliography; Indices.