Constantine was born in Athens, Greece and studied literature and history at the universities of Kent and U.C.L. and has received his PHD in comparative literary studies from the University of Athens. He has been a lecturer on English and American literature at the University of Athens in Greece, professor of composition and literature at New York College (Athens Campus), has translated over 10 books and written a number of articles, reviews and critical introductions for numerous newspapers, periodicals and books. He has written three books: Approaches in Contemporary American Fiction (Gavrilides Publishing, 2008), The Evolution of the Short Story (Mikri Arktos Publishing, 2011) and On Difficulty which is under publication from Mikri Arktos. He is interested in literature, cinema, history and is an enthusiastic sports fan.