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A striking difference between the porphyry portraits of the senior tetrarchs and the marble head of Constantine, the latter statue's clean-shaven face evokes portraits of Trajan, optimus princeps, and the first emperor, Augustus. The distinction between the porphyry and marble portraits points to another salient aspect of the fourth century, the alternation between periods of religious peace and conflict. Constantine's achievement of sole power as Christian emperor changed everything and nothing. His accession is, indeed, treated as a watershed by those who overlook the rapprochement between Christianity and Platonism in the late third century and who view Diocletian's persecution as the culmination of a sustained anti-Christian policy rather than an aberration. After Constantius' death, Julian moved quickly to put his own imprint on Roman power. Receiving reinforcements from Gratian, Theodosius' first task was to deal militarily with the Visigothic problem. In the East, Theodosius too became increasingly hostile toward traditional cult.
In this section, we aim to provide a survey of philosophy as it was generally understood and practised around 200 ce. One may imagine the array of material confronting an advanced student of philosophy in, say, Rome or Alexandria at this time. We assume that the student would already be acquainted with what were then thought to be the major works of the founders of the great philosophical schools of antiquity – Plato, Aristotle, Epicurus and Zeno. In any case, he or she would have available various doxographical accounts of the ancient practitioners of philosophy. With this acquaintance must have come a considerable degree of perplexity, not the least owing to the apparent conflicts among the conclusions of these giants and the obscurity of many of their writings. Our student, however, would soon discover that these conflicts and obscurities had in fact been the subject of intense philosophical reflection and commentary for the intervening 500 years since the early days of the philosophical schools. Depending on the master whom the student chose to follow, he or she would encounter a complex tradition of defensive explication of one school’s positions against those of opponents. The student would also encounter various philosophical strategies employed to demonstrate that philosophical positions that seemed to be at odds were in fact in harmony. This approach, which certainly antedates our starting point by at least 300 years, will eventually take on an increasing urgency in the minds of Greek philosophers when faced with the growing dominance of Christianity.
There are no reasons to doubt that Philoponus bore the Christian name of John from birth, and that he was born in Alexandria. Simplicius informs us that John called himself ‘the Grammarian’ (Simpl. In Cael. 119.7). As regards the surname ‘Philoponus’ (literally ‘the lover of labour’), it is often considered to mean that John was at a certain moment a member of a group of philoponoi, i.e., a militant Christian brotherhood. Probably, however, it only refers to the author’s diligence as a writer. He was born c. 490 or a few years earlier, and first studied philology before engaging in philosophy. His master in philosophy was Ammonius. Somehow Philoponus succeeded in becoming the principal editor of Ammonius’ commentaries on Aristotle, and we may assume that this was his main philosophical activity before 529. In 529, the year of Justinian’s decree prohibiting the teaching of pagan philosophy, Philoponus published De aeternitate mundi contra Proclum, a violent attack against the Platonic (and his own earlier) doctrine of the eternity of the world. After 529 he probably taught philosophy for some time, without, however, being the head of the Alexandrian school himself. In this period he revised his earlier commentaries on the Posterior Analytics, the Physics and the Meteorology in the light of his new Christian philosophy. Philoponus’ Christian about-turn, however, did not involve the Alexandrian school in its entirety. Even before 529, the scholarch Ammonius had been succeeded by the mathematician Eutocius, and Eutocius himself was later succeeded by Olympiodorus, who made no secret of his paganism.
Justin continued to present himself as a philosopher after his conversion to Christianity, and to see himself as engaged in a common pursuit with other philosophers. This is evident in the audacity of his addressing himself to the emperor and his adopted sons, Marcus Aurelius and Lucius, in the First Apology. There are only a few passages in Justin's works that contain a sustained discussion of philosophical topics. The most important of these is in the opening chapters of the Dialogue with Trypho where, after a brief initial discussion with Trypho about philosophy, Justin outlines his own philosophical education, and his encounter with 'an old man' who engages him in a dialogue about philosophy, a dialogue which is considerably more Socratic in tone than the Dialogue with Trypho itself. The Apologies contain discussions on fate and free will, and on the relationship between the teachings of philosophers such as Socrates and Christianity. The existence of God is axiomatic for Justin.
The doctrines and rituals presented by the Oracles were vital to those who called themselves theurgists. These include cosmogonical, metaphysical and theological information, and instructions for rituals that would help the theurgists to learn more about the cosmos and the gods, and to purify their souls, eventually causing them to rise to the heavens. Philosophically, the doctrines are heavily indebted to Middle Platonism. The Chaldaean metaphysical hierarchy is a variation of the Middle-Platonic schema. It is necessary to consider a host of other, minor deities who, having a special role in magic and ritual, are placed within and are essential to the Chaldaean philosophical structure. These divinities include Eros, Iynges and the Connectors. In the ritual system of the theurgists once can see a determination to put into effect what were, for other Middle Platonists, philosophical concepts only to be thought about. The Oracles had a long life in Late Platonism.
Calcidius adheres to the doctrine of the eternity of the world, and posits matter as a co-principle with and independent from god. He does not Christianize the Timaeus but rather makes the case for Platonic doctrine as he understands it. It is also possible that he did not realize that the Platonist Origen and the Christian one could have been two different people. The very act of writing a commentary on a non-Christian text may set him apart from the Christian circles of his time. Thus this work forces us to rethink the boundaries between Christian and pagan affiliations in the fourth century CE. Calcidius himself provides us with the key to the structure of his exposition. He uses transitions in the Timaeus account together with a markedly sequential approach, moving from more basic to complex and advanced topics. Calcidius has included in his doxography, a position that is similar to one elsewhere attested for Porphyry.
Even though the Church Fathers know him as Philo Judaeus, modern scholars generally refer to him as Philo of Alexandria, to distinguish him from various pagan Greek authors of the same name. Philo's bolder philosophical reformulations of Jewish religious tradition are partially veiled by a haze of studied ambiguity. Although the understanding of Judaism reflected in Philo's works is mediated through biblical exegesis, there is much in his exposition that radically revises the traditional meaning of that sacred text despite continuous efforts on his part to disguise this fact. A philosopher's theory of creation inevitably reflects his fundamental approach to the nature of the real and thus provides a crucial key for the unlocking of his world view. This chapter discusses two types of mosaic prophecy: ecstatic and noetic. A brief phenomenological comparison of some of the mystical motifs in Philo and the great Sufi theosophist Ibn 'Arabi allows one to appreciate the dimensions of Philo's strong mystical tendencies.
The work of Maximus the Confessor (580–662) presents the philosophical world view of the Greek-speaking Christian tradition in its most fully developed form. It is comprehensive both in the extent to which it draws upon earlier authors – including Clement of Alexandria, Origen, the Cappadocian Fathers, Nemesius of Emesa, Evagrius of Pontus, Cyril of Alexandria, and Pseudo-Dionysius, among others – and in its far-ranging scope. Pride of place among the influences on Maximus must undoubtedly go to Pseudo-Dionysius. Like the Areopagite, Maximus regards ‘good’ as the pre-eminent divine name, and he welcomes the Platonic description of the Good as ‘beyond being’ as appropriate to the Christian God. He is also like Pseudo-Dionysius in his vision of the cosmos as fundamentally theophanic, a manifestation of intelligible or spiritual reality in sensible form. However, Maximus is more explicit than Pseudo-Dionysius about the role of the divine will in creation, and he gives a more prominent role to the Incarnation as the central act by which the divine is made manifest. Accordingly, whereas Pseudo-Dionysius can be (and often has been) read as implicitly denying that God is a personal being, for Maximus the personal character of God is never in question.
Any attempt to situate Maximus within the history of philosophy must begin with some disclaimers. Maximus writes as a theologian rather than a philosopher, and many of his most interesting ideas are presented through elaborate allegorical interpretations of Scripture. To winnow out the philosophical elements, as we shall do here, can inevitably present only a partial picture of his thought.
LIFE AND WRITINGS OF DAMASCIUS (AROUND 462 – AFTER 538)
Biographical data
The chronology of the Platonic Academy in later ancient times is relatively well known, owing to the description Damascius furnishes in his Vita Isidori (a biography of Damascius’ beloved teacher, who was probably also one of his predecessors as the head of the Academy). Concerning Damascius’ own life, however, we do not have very detailed knowledge. One of the few facts that are known with certainty is that he originated from Damascus (as we know from Simplicius, In Phys. 624.38 Diels, and from Damascius’ own Vita Isidori 200 Photius). The only dates that are certain are circumstantial to Damascius’ life: the closing down of the pagan schools by the Emperor Justinian in 529, which led to Damascius’ exile; and the date of a stele, found in Homs (Emesa, Syria) in 1925 and dated 538 ce. It bears an epitaph that was known from another literary tradition (the Anthologia Palatina), to be attributed to Damascius:
Zosime, who has been a slave only in body, has now found freedom even from her body.
(Anthologia Palatina VII, 553)
The stele quotes the verse in the first person (‘I, Zosime …’), which suggests that this is the original version of the text, written for this occasion. If that is true, then it is more than probable that Damascius was living in Syria around 538 ce.
According to his own Vita Isidori, Damascius had been in Athens already before 485, when Proclus died. He had been studying rhetoric in Alexandria, and then came to Athens as a teacher of rhetoric.
This chapter focuses on Stoicism as it developed between the time of Antiochus and the third century CE. At the end of the Hellenistic era Stoicism could be and was seen in two quite different relationships to the two schools, Platonism and Aristotelianism, which would play the largest role in the development of later ancient philosophy. In the years after the closure of the central school at Athens, Stoicism of course lived on. from the second century BCE onwards Stoic philosophers intensified their interaction with Platonists and Aristotelians in a way that enriched the intellectual life of the school. Four philosophers deserve particular attention as indicators of the level and type of engagement with Stoicism in the period: Platonist Plutarch of Chaeronea, Alexander of Aphrodisias, philosophical doctor Galen, and Alcinous. Plutarch, Galen and Alexander take aim at Stoic doctrines and argue against Stoic opponents, both contemporary and historical, Alcinous is perhaps more representative of philosophical teachers in his day.
Eusebius gives a list of Clement's works. Like the Platonists, Clement's Gnostic studies philosophy in order, starting with ethics, then physics, then theology or metaphysics. Clement's position as catechist in Alexandria and his association with precursors of Plotinus such as Origen and Ammonius Saccas hint at the possibility that Plotinus and post-Plotinian Platonists took inspiration from the Christian School at Alexandria started by Pantaenus. Clement's true 'Christian Gnostic' who, by initiation into the great mysteries, achieves total unification with the Divine, already anticipates Plotinus. Arguably, Clement's most important work is his epistemological inquiry into the roles of faith and intellectual knowledge in the ideal human life. Clement's account of soul looks remarkably Aristotelian. Clement's reflections on the place of philosophy in human life, and in the search for truth, are fundamental. Clement develops a range of original and challenging lines of thought in his attempt to secure the dependence of Christian theology on intellectually respectable work in philosophy.
Themistius' school most likely offered training in both philosophy and rhetoric. Five authentic Aristotelian paraphrases by Themistius have been preserved, three, On the Soul, Posterior Analytics and Physics, in the original Greek and two, On the Heavens and Metaphysics Lambda, in both Hebrew and Latin versions. Themistius revived and to a large extent reinvented the genre of Aristotelian paraphrase as an exegetical tool. Logic clearly occupies a central place both in the curriculum of Themistius' school and in his own interest in philosophy. Themistius' Physics paraphrase contains few original discussions, being designed as an advanced introductory text to the problems of Aristotle's Physics, but some of the occurring digressions shed additional light on Themistius' overall philosophical position. The paraphrase of De anima is by far the longest and philosophically the most interesting work by Themistius. The philosophical position found in Themistius' extant works could be described as an original synthesis within the broad tradition of concordance between Plato and Aristotle.
From the second half of the fourth century ce until the death of Augustine in 430 Christian theology fully matured. The fact that Marius Victorinus and Augustine wrote in Latin hardly suffices to justify our setting them outside of the dialogue of Christians and pagans within the ancient Greek philosophical world. Even when Latin speakers learned their philosophy from the books of Latin authors like Cicero, what they learned was ancient Greek philosophy. The refined vocabulary of ancient Greek philosophy was the starting point for the expression of theological doctrine. The well-known example of the controversy over how to express the relation between the persons of the Trinity turns upon the understanding of one of the central terms of Greek philosophy – ousia. As theologically motivated students of philosophy learned almost immediately, the Greek philosophers differed in their understanding of ousia. Plato in his Republic has Socrates state that the Good is ‘above’ ousia, primarily owing to the absolute simplicity of the first principle of all. Aristotle in his Metaphysics states that the question ‘what is being?’ is just the question ‘what is ousia?’ He goes on to argue that the primary referent of ousia is the thinking of a divine mind ‘beyond’ which there is nothing. This fundamental disagreement is reflected in the philosophical schools throughout period. So, the question of whether the first person of the Trinity was in any way ‘beyond’ the second and the third is inseparable from the question of whether the first principle must be absolutely simple.
Hierocles himself, according to an anecdote told by Damascius, ran foul of the authorities on a trip to Byzantium and was flogged, but returned to Alexandria 'and continued to philosophize with his students as he was accustomed'. In spite of the Christian-versus-pagan theme Hierocles remained a stalwart pagan philosopher, making no concessions, in his writings at any rate, to Christianity, and he enjoyed a fruitful teaching career. Hierocles' Demiurge is 'the first cause' and 'the very first and best' of the superior beings, just as Porphyry calls the highest creative cause 'the one demiurge, the very first'. The procession from the Demiurge to the created order is the characteristic Platonic procession from the second hypostasis of Intellect to the third hypostasis of Soul. In the subsequent history of late Platonism Hierocles was largely overshadowed by the most famous pupil of both Plutarch of Athens and Syrianus, Proclus.