In Ennead I.5 Plotinus attempts to navigate a well-trodden path of inquiry by directly responding to a wide spectrum of popular theories on human flourishing, and insisting emphatically that well-being belongs to the present moment. Indeed, Aristotle—with his insistence that well-being be measured by “a complete life” (Nicomachean Ethics 1098a16–20) or a life measured by virtue, a modus vivendi sustained via the development of appropriate habits (hexis) and the avoidance of misfortunes—is one of Plotinus’ central targets. Nevertheless, it is also obvious that the Hellenistic schools, with their almost evangelical insistence that happiness is available to practitioners in the immediacy of the “now,” take pride of place in Plotinus’ short treatise on the subject. Layne analyzes in depth Plotinus’ unique conception of the value of the present moment by highlighting his dialogue with Aristotle and Hellenistic conceptions of the soul, pleasure and pain, time and eternity, and so forth.

Platonic discourses concerning the soul are incredibly rich and multitiered. Plato's own diverse and disparate arguments and images offer competing accounts of how we are to understand the nature of the soul. Consequently, it should come as no surprise that the accounts of Platonists who engage Plato’s dialogues are often riddled with questions. This volume takes up the theories of well-known philosophers and theologians, including Plato, Plotinus, Proclus, the emperor Julian, and Origen, as well as lesser-known but equally important figures in a collection of essays on topics such as transmigration of the soul, the nature of the Platonist enlightenment experience, soul and gender, pagan ritual practices, Christian and pagan differences about the soul, mental health and illness, and many other topics. Contributors include Crystal Addey, Sara Ahbel-Rappe, Dirk Baltzly, Robert Berchman, Jay Bregman, Luc Brisson, Kevin Corrigan, John Dillon, John F. Finamore, Lloyd P. Gerson, Dorian Gieseler Greenbaum, Elizabeth Hill, Sarah Klitenic Wear, Danielle A. Layne, Ilaria L. E. Ramelli, Gregory Shaw, Svetla Slaveva-Griffine, Suzanne Stern-Gillet, Harold Tarrant, Van Tu, and John D. Turner.