Andrew Smith is Emeritus Professor at University College Dublin where he was Professor of Classics from 1992-2010. He had also lectured at the University of Liverpool and University College Galway after undergraduate and postgraduate studies in Hull and Bern. He is the author of numerous articles on Neoplatonism (some of which are reprinted in Plotinus, Porphyry and Iamblichus: Philosophy and Religion in Neoplatonism, 2012) and edited the Teubner edition of the fragments of Porphyry. He has contributed Ennead I.6 to this series, of which he is the co-editor with John Dillon.