  Proclus of Athens (*412–485 C.E.) was the most authoritative philosopher of late antiquity and played a crucial role in the transmission of Platonic philosophy from antiquity to the Middle Ages. For almost fifty years, he was head or ‘successor’ (diadochos, sc. of Plato) of the Platonic ‘Academy’ in Athens. Being an exceptionally productive writer, he composed commentaries on Aristotle, Euclid and Plato, systematic treatises in all disciplines of philosophy as it was at that time (metaphysics and theology, physics, astronomy, mathematics, ethics) and exegetical works on traditions of religious wisdom (Orphism and Chaldaean Oracles). Proclus had a lasting influence on the development of the late Neoplatonic schools not only in Athens, but also in Alexandria, where his student Ammonius became the head of the school.  In a culture dominated by Christianity, the Neoplatonic philosophers had to defend the superiority of the Hellenic traditions of wisdom.  Continuing a movement that was inaugurated by Iamblichus (4th c.) and the charismatic figure of emperor Julian, and following the teaching of Syrianus, Proclus was eager to demonstrate the harmony of the ancient religious revelations (the mythologies of Homer and Hesiod, the Orphic theogonies and the Chaldaean Oracles) and to integrate them in the philosophical tradition of Pythagoras and Plato. Towards this end, his Platonic Theology offers a magisterial summa of pagan Hellenic theology. Probably the best starting point for the study of Proclus’ philosophy is the Elements of Theology (with the masterly commentary by E.R. Dodds) which provide a systematic introduction into the Neoplatonic metaphysical system.