The Council of Ephesus in 431 condemned Nestorius, the bishop of
Constantinople, because he taught that Mary, the mother of Jesus, was not
the mother of God. How could he hold this, the Alexandrian bishop Cyril
argued, if he really believed that Jesus was God? The right way to formulate
the doctrine of the Incarnation, the Council decided, was to say that
Christ, a single person, had two distinct natures, one divine and one
human. But the Council did not go far enough for some Alexandrians,
who believed that the incarnate Son of God possessed only a single nature.
These extremists arranged a second council at Ephesus, which proclaimed
the doctrine of the single nature (‘monophysitism’). Pope Leo, who had
submitted written evidence in favour of the dual nature, denounced the
Council as a den of robbers.
Heartened by the support of Rome, Constantinople struck back at
Alexandria, and at a council at Chalcedon in 451 the doctrine of the dual
nature was aYrmed. Christ was perfect God and perfect man, with a human
body and a human soul, sharing divinity with his Father and sharing
humanity with us. The decisions of Chalcedon and Wrst Ephesus henceforth
provided the test of orthodoxy for the great majority of Christians, though
in eastern parts of the empire substantial communities of Nestorian and
monophysite Christians remained, some of which have survived to this day.
In the history of thought the importance of these Wfth-century councils is
that they hammered out technical meanings for terms such as ‘nature’ and
‘person’ in a manner that inXuenced philosophy for centuries to come.
After the repulse of Attila the western Roman Empire survived a further
quarter of a century, though power in Italy had largely passed to barbarian
army commanders. One of these, Odoacer, in 476, decided to become ruler
in name and not just in fact. He sent oV the last faine
´
ant emperor,
Romulus Augustulus, to exile near Naples. For the next half-century
Italy became a Gothic province. Its kings, though Christians, took little
interest in the recent Christological debates: they subscribed to a form of
Christianity, namely Arianism, that had been condemned as long ago as
the time of Constantine I. Arianism took various forms, all of which denied
that Jesus, the Son of God, shared the same essence or substance with God
the Father. The most vigorous of the Gothic kings, Theodoric (reigned
493–526), established a tolerant regime in which Arians, Jews, and Ortho-
dox Catholics lived together in tranquillity and in which art and culture
thrived.
PHILOSOPHY AND FAITH
17