Plato (c.427-347BC) - philosopher whose thinking has shaped Western intellectual tradition. Aristotle (384-322BC) - influential and prolific author of the Ethics and the Politics. Horace (c.65-8BC) - a Latin lyric poet and satirist. Longinus - an unknown Greek author writing mid 1AD T. S. Dorsch was Professor of English at the University of Durham. He died in 1991. Penelope Murray is Senior Lecturer in Classics at the University of Warwick.