Gnosticism, Christianity and late antique philosophy are often studied separately; when studied together they are too often conflated. These articles set out to show that we misunderstand all three phenomena if we take either approach. We cannot interpret, or even identify, Christian Gnosticism without Platonic evidence; we may even discover that Gnosticism throws unexpected light on the Platonic imagination. At the same time, if we read writers like Origen simply as Christian Platonists, or bring Christians and philosophers together under the porous umbrella of "monotheism", we ignore fundamental features of both traditions. To grasp what made Christianity distinctive, we must look at the questions asked in the studies here, not merely what Christians appropriated but how it was appropriated. What did the pagan gods mean to a Christian poet of the fifth century? What did Paul quote when he thought he was quoting Greek poetry? What did Socrates mean to the Christians, and can we trust their memories when they appeal to lost fragments of the Presocratics? When pagans accuse the Christians of moral turpitude, do they know more or less about them than we do? What divides Augustine, the disenchanted Platonist, from his Neoplatonic contemporaries? And what God or gods await the Neoplatonist when he dies?

The Cambridge History of Philosophy in Late Antiquity comprises over forty specially commissioned essays by experts on the philosophy of the period 200–800 CE. Designed as a successor to The Cambridge History of Later Greek and Early Medieval Philosophy (edited by A. H. Armstrong), it takes into account some forty years of scholarship since the publication of that volume. The contributors examine philosophy as it entered literature, science and religion, and offer new and extensive assessments of philosophers who until recently have been mostly ignored. The volume also includes a complete digest of all philosophical works known to have been written during this period. It will be an invaluable resource for all those interested in this rich and still emerging field.

In the second century, Platonist and Judeo-Christian thought were sufficiently friendly that a Greek philosopher could declare, "What is Plato but Moses speaking Greek?" Four hundred years later, a Christian emperor had ended the public teaching of subversive Platonic thought. When and how did this philosophical rupture occur? Dylan M. Burns argues that the fundamental break occurred in Rome, ca. 263, in the circle of the great mystic Plotinus, author of the Enneads. Groups of controversial Christian metaphysicians called Gnostics ("knowers") frequented his seminars, disputed his views, and then disappeared from the history of philosophy—until the 1945 discovery, at Nag Hammadi, Egypt, of codices containing Gnostic literature, including versions of the books circulated by Plotinus's Christian opponents. Blending state-of-the-art Greek metaphysics and ecstatic Jewish mysticism, these texts describe techniques for entering celestial realms, participating in the angelic liturgy, confronting the transcendent God, and even becoming a divine being oneself. They also describe the revelation of an alien God to his elect, a race of "foreigners" under the protection of the patriarch Seth, whose interventions will ultimately culminate in the end of the world. Apocalypse of the Alien God proposes a radical interpretation of these long-lost apocalypses, placing them firmly in the context of Judeo-Christian authorship rather than ascribing them to a pagan offshoot of Gnosticism. According to Burns, this Sethian literature emerged along the fault lines between Judaism and Christianity, drew on traditions known to scholars from the Dead Sea Scrolls and Enochic texts, and ultimately catalyzed the rivalry of Platonism with Christianity. Plunging the reader into the culture wars and classrooms of the high Empire, Apocalypse of the Alien God offers the most concrete social and historical description available of any group of Gnostic Christians as it explores the intersections of ancient Judaism, Christianity, Hellenism, myth, and philosophy.

First published in 2014. Routledge is an imprint of Taylor & Francis, an informa company.

Science in Byzantium has rarely been systematically explored. A first of its kind, this collection of essays highlights the disciplines, achievements, and contexts of Byzantine science across the eleven centuries of the Byzantine empire. After an introduction on science in Byzantium and the 21st century, and a study of Christianization and the teaching of science in Byzantium, it offers a comprehensive and up-to-date survey of the scientific disciplines cultivated in Byzantium, from the exact to the natural sciences, medicine, polemology, and the occult sciences. The volume showcases the diversity and vivacity of the varied scientific endeavours in the Byzantine world across its long history, and aims to bring the field into broader conversations within Byzantine studies, medieval studies, and history of science. Contributors are Fabio Acerbi, Anne-Laurence Caudano, Gonzalo Andreotti Cruz, Katerina Ierodiakonou, Herve Inglebert, Stavros Lazaris, Divna Manolova, Maria K. Papathanassiou, Inmaculada Pérez Martín, Thomas Salmon, Ioannis Telelis, Anne Tihon, Alain Touwaide, Arnaud Zucker.

This book brings together a selection of Kevin Corrigan’s works published over the course of some 27 years. Its predominant theme is the encounter with otherness in ancient, medieval and modern thought and it ranges in scope from the Presocratics-through Plato, Aristotle, Plotinus and the late ancient period, on the one hand, and early Christian thought, especially Gregory of Nyssa, Augustine and, much later, Aquinas, on the other. Among the key questions examined are the relation between faith and reason; the nature of creation and insight, being and existence; literature, philosophy and the invention of the novel; personal, human and divine identity; the problem of evil (particularly here in Dostoevsky’s adaptation of a Platonic perspective); the character of ideas themselves; women saints in the early Church; love of God and love of neighbor; the development of Christian Trinitarian thinking; the strange notion of philosophy as prayer; and the mind/soul-body relation.

This book presents how ancient Christianity must be understood from the viewpoint of the history of religions in late antiquity. The continuation of biblical prophecy runs like a thread from Jesus through Mani to Muhammad. And yet this thread, arguably the single most important characteristic of the Abrahamic movement, often remains outside the mainstream, hidden, as it were, since it generates heresy. The figures of the Gnostic, the holy man, and the mystic are all sequels of the Israelite prophet. They reflect a mode of religiosity that is characterized by high intensity. It is centripetal and activist by nature and emphasizes sectarianism and polemics, esoteric knowledge, or gnosis and charisma. The other mode of religiosity, obviously much more common than the first one, is centrifugal and irenic. It favors an ecumenical attitude, contents itself with a widely shared faith, or pistis, and reflects, in Weberian parlance, the routinization of the new religious movement. This is the mode of priests and bishops, rather than that of martyrs and holy men. These two main modes of religion, high versus low intensity, exist simultaneously, and cross the boundaries of religious communities. They offer a tool permitting us to follow the transformations of religion in late antiquity in general, and in ancient Christianity in particular, without becoming prisoners of the traditional categories of patristic literature. Through the dialectical relationship between these two modes of religiosity, one can follow the complex transformations of ancient Christianity in its broad religious context.

This collection of articles first brings together a number of working papers which were significant in the development of Frances Young's understanding of patristic exegesis, studies not included in her ground-breaking book, Biblical Exegesis and the Formation of Christian Culture (1997), though paving the way for that work. Then comes a selection of papers on theology, church order and methodology, the whole collection constantly returning to themes such as the fundamental connection between theology and exegesis, the significant role of reflection on language, metaphor and symbol, and the creative interaction of early Christianity with its cultural and intellectual environment. These studies demonstrate the author's scholarly approach to patristic material, whereby careful attention is paid to actual texts from the past; but they also reveal the groundwork for her own theological explorations in the very different intellectual environment of the present.

“Gnosticism” has become a problematic category in the study of early Christianity. It obscures diversity, invites essentialist generalisations, and is a legacy of ancient heresiology. However, simply to conclude with “diversity” is unsatisfying, and new efforts to discern coherence and to synthesise need to be made. The present work seeks to make a fresh start by concentrating on Irenaeus’ report on a specific group called the “Gnostics” and on his claim that Valentinus and his followers were inspired by their ideas. Following this lead, an attempt is made to trace the continuity of ideas from this group to Valentinianism. The study concludes that there is more continuity than has previously been recognised. Irenaeus’ “Gnostics” emerge as the predecessors not only of Valentinianism, but also of Sethianism. They represent an early, philosophically inspired form of Christ religion that arose independently of the New Testament canon. Christology is essential and provides the basis for the myth of Sophia. The book is relevant for all students of Christian origins and the early history of the Church.

The Gnostic World is an outstanding guide to Gnosticism, written by a distinguished international team of experts to explore Gnostic movements from the distant past until today. These themes are examined across sixty-seven chapters in a variety of contexts, from the ancient pre-Christian to the contemporary. The volume considers the intersection of Gnosticism with Jewish, Christian, Islamic and Indic practices and beliefs, and also with new religious movements, such as Theosophy, Scientology, Western Sufism, and the Nation of Islam. This comprehensive handbook will be an invaluable resource for religious studies students, scholars, and researchers of Gnostic doctrine and history.