Plotinus Series edited by John M. Dillon and Andrew Smith, Parmenides Publishing, 2015, Barrie Fleet, Plotinus: Ennead III.6, On the Impassivity of the Bodiless, Oxford, 1995. Barrie Fleet, Plotinus: Ennead IV.8, On the Descent of the Soul into Bodies, The Enneads of Plotinus Series edited by John M. Dillon and Andrew Smith, Parmenides Publishing, 2012. Lloyd P. Gerson, Plotinus: Ennead V.5, That the Intelligibles are not External to the Intellect, and on the Good, The Enneads of Plotinus Series edited by John M. Dillon and Andrew Smith, Parmenides Publishing, 2013, Sebastian R. P. Gertz, Plotinus: Ennead II.9, Against the Gnostics, The Enneads of Plotinus Series edited by John M. Dillon and Andrew Smith, Parmenides Publishing, 2017, Gary M. Gurtler, SJ, Plotinus: Ennead IV.4.30-45 & IV.5, "Problems Concerning the Soul", The Enneads of Plotinus Series edited by John M. Dillon and Andrew Smith, Parmenides Publishing, 2015, W. Helleman-Elgersma, Soul-Sisters. A Commentary on Enneads IV, 3 (27), 1–8 of Plotinus, Amsterdam, 1980. James Luchte, Early Greek Thought: Before the Dawn. London: Bloomsbury Publishing, 2011. . Kieran McGroarty, Plotinus on Eudaimonia: A Commentary on Ennead I.4, Oxford, 2006. P. A. Meijer, Plotinus on the Good or the One (VI.9), Amsterdam, 1992. H. Oosthout, Modes of Knowledge and the Transcendental: An Introduction to Plotinus Ennead V.3, Amsterdam, 1991. J. Wilberding, Plotinus' Cosmology. A study of Ennead II. 1 (40), Oxford, 2006. A. M. Wolters, Plotinus on Eros: A Detailed Exegetical Study of Enneads III, 5, Amsterdam, 1972. General works on Neoplatonism Robert M. Berchman, From Philo to Origen: Middle Platonism in Transition, Chico, Scholars Press, 1984. Frederick Copleston, A History of Philosophy: Vol. 1, Part 2. P. Merlan, "Greek Philosophy from Plato to Plotinus" in A. H. Armstrong (ed.), The Cambridge History of Later Greek and Early Medieval Philosophy, Cambridge, 1967. Pauliina Remes, Neoplatonism (Ancient Philosophies), University of California Press, 2008. Thomas Taylor, The fragments that remain of the lost writings of Proclus, surnamed the Platonic successor, London, 1825. (Selene Books reprint edition, 1987. ) Richard T. Wallis, Neoplatonism and Gnosticism, University of Oklahoma, 1984. and Studies on some aspects of Plotinus' work R. B. Harris (ed.), Neoplatonism and Indian Thought, Albany, 1982. Giannis Stamatellos, Plotinus and the Presocratics. A Philosophical Study of Presocratic Influences in Plotinus' Enneads, Albany, 2008. N. Joseph Torchia, Plotinus, Tolma, and the Descent of Being, New York, Peter Lang, 1993. Antonia Tripolitis, The Doctrine of the Soul in the