The term dunamis (potentiality) entered into the philosophical vocabulary with Plato, but it was with Aristotle that it acquired, together with energeia (actuality), the strong technical meaning that the two terms have maintained, with variations, throughout subsequent philosophical tradition. The significance of the notions of actuality and potentiality in Plotinus' thought can hardly be overstated. Throughout the Enneads, they are crucial to understanding the specific causality of intelligible realities and the relation of participation between intelligible and sensible realms. In Ennead II.5, Plotinus for the first time provides a systematic clarification of his peculiar use of these terms, through a sustained revision of Aristotle's own elaboration of the topic and of his terminology. The treatise discusses the different meanings of potentiality and actuality as well as the way each of them applies or does not apply to the sensible realm, to the intelligible realm, and to matter.

Ennead VI.4-5, originally written as a single treatise, contains Plotinus' most general and sustained exposition of the relationship between the intelligible and the sensible realms, addressing and coalescing two central issues in Platonism: the nature of the soul-body relationship and the nature of participation. Its main question is, How can soul animate bodies without sharing their extension? The treatise seems to have had considerable impact: it is much reflected in Porphyry's important work, Sententiae, and the doctrine of reception according to the capacity of the recipient, for which this treatise is the main source, resonated in medieval thinkers.

Ennead IV.4.30-45 and IV.5 retrieves the unity in this last section of Plotinus' treatise on Problems concerning the Soul. Combining translation with commentary, Gurtler enhances both the accuracy of the translation and the recovery of Plotinus' often unsuspected originality. This is especially true for IV.5, where previous translations fail to convey the concise nature of his argument against both the Aristotelian and Platonic theories of vision. Plato and Aristotle each claim that vision depends on the light between the eye and the object, but Plotinus presents evidence that this is not the case and develops a novel theory of light as a second activity that moves from source to object directly, even arguing that color is in the light itself rather than merely a quality of the object. This theory of vision, in turn, depends on the nature of sympathy developed especially in IV.4.30-45, where Plotinus shows how action at a distance is both possible and necessary for the proper unity in diversity of the sensible cosmos.

In Plotinus on Love, Alberto Bertozzi argues that love is the origin, culmination, and regulative force of the double movement that characterizes Plotinus' metaphysics: the derivation of all reality from the One and the return of the soul to it.

"This volume examines some of the main twists and turns in the fascinating history of the philosophical concept of powers or dispositions. It focuses on what one might call the metaphysical sense of 'powers'-that is, the powers that are invoked in the explanation of natural changes and activities. The volume's chapters discuss, among others, the philosophical views of Anaxagoras, Plato, Aristotle, the Stoics, Plotinus, Ibn Gabirol, Avicenna, Abelard, Anselm, Henry of Ghent, John Duns Scotus, René Descartes, Nicolas Malebranche, Gottfried Wilhelm Leibniz, Margaret Cavendish, Ralph Cudworth, Henry More, John Locke, David Hume, Thomas Reid, Mary Shepherd, Immanuel Kant, Georg Wilhelm Friedrich Hegel, David Lewis, David Armstrong, and George Molnar. In addition, the volume contains four short reflection essays that examine the concept of powers from the perspective of disciplines other than philosophy, namely, history of music, West African religions, history of chemistry, and history of art"--

Plotinus (AD 205–270) was the founder of Neoplatonism, whose thought has had a profound influence on medieval philosophy, and on Western philosophy more broadly. In this engaging book, Eyjólfur K. Emilsson introduces and explains the full spectrum of Plotinus’ philosophy for those coming to his work for the first time. Beginning with a chapter-length overview of Plotinus’ life and works which also assesses the Platonic, Aristotelian and Stoic traditions that influenced him, Emilsson goes on to address key topics including: Plotinus’ originality the status of souls Plotinus’ language the notion of the One or the Good Intellect, including Plotinus’ holism the physical world the soul and the body, including emotions and the self Plotinus’ ethics Plotinus’ influence and legacy. Including a chronology, glossary of terms and suggestions for further reading, Plotinus is an ideal introduction to this major figure in Western philosophy, and is essential reading for students of ancient philosophy and classics.

Philosophy and Political Power in Antiquity is a collection of essays examining ancient philosophers' reflections on the connection between political power and philosophy. The ancient Greeks both invented political philosophy and were the first to conceptualize the implicit tension between political activity and the contemplative life as found in ideal political institutions and under conditions of repressive rule. These essays examine discussions of these issues within a wide variety of the major schools of antiquity from both interpretive and analytical perspectives. While providing novel approaches to ancient philosophical texts, this volume attests to the importance of political reflection, deliberation, and resistance for ancient thought, and to the enduring strength and relevance of these reflections for contemporary debates within political philosophy.