John J. Cleary received a first class honours MA from University College Dublin in 1975 for a thesis on Karl Popper, and in 1981 a Ph.D. (summa cum laude) from Boston University for a dissertation on Aristotle's theory of abstraction. Besides his main publications (Aristotle on the Many Senses of Priority, 1988), and Aristotle and Mathematics: Aporetic Method in Cosmology and Metaphysics, 1995) he wrote widely on ancient philosophy, philosophy of mathematics, and theories of education.

John Dillon graduated in Literae Humaniores from Oxford in 1963, and received his Ph.D. from the University of California at Berkeley in 1969. He taught at Berkeley until 1980, when he was appointed to the Regius Professorship of Greek at Trinity College Dublin, where he remained until his retirement in 2006. He is the author or editor of over 30 books in Greek Philosophy, in particular the history of the Platonic tradition.

Brendan O'Byrne is an Assistant Professor of Philosophy as well as Curator of the Dublin Centre for the Study of the Platonic Tradition, Trinity College Dublin. He wrote his Ph.D. dissertation (2001) under Professor John Dillon on the subject of Heidegger's encounter with Plato. He is currently working on the theme of self-knowledge in Sophocles and Plato.

Fran O'Rourke is Associate Professor of Philosophy at University College Dublin. He studied at Galway, Vienna, Köln, Louvain, and Leuven. He is author of Pseudo-Dionysius and the Metaphysics of Aquinas (2005) and Allwisest Stagyrite: Joyce's Quotations from Aristotle (2005). He is preparing for publication a collection of essays entitled Aristotelian Interpretations, and completing a book on James Joyce, Aristotle, and Aquinas.