Roman historian, exegete and Christian polemicist. He became the Bishop of Caesarea in Palestine about the year 314. Together with Pamphilus, he was a scholar of the Biblical canon and is regarded as an extremely well learned Christian of his time. He wrote Demonstrations of the Gospel, Preparations for the Gospel, and On Discrepancies between the Gospels, studies of the Biblical text. As “Father of Church History” he produced the Ecclesiastical History, On the Life of Pamphilus, the Chronicle and On the Martyrs.

Eusebius Page

Syrian Neoplatonist philosopher who determined the direction taken by later Neoplatonic philosophy. Iamblichus was the chief representative of Syrian Neoplatonism, though his influence spread over much of the ancient world. The events of his life and his religious beliefs are not entirely known, but the main tenets of his beliefs can be worked out from his extant writings. Iamblichus was said to have been a man of great culture and learning. He was also renowned for his charity and self-denial. Many students gathered around him, and he lived with them in genial friendship. Only a fraction of Iamblichus' books have survived. For our knowledge of his system, we are indebted partly to the fragments of writings preserved by Stobaeus and others. The notes of his successors, especially Proclus, as well as his five extant books and the sections of his great work on Pythagorean philosophy also reveal much of Iamblichus' system. Besides these, Proclus seems to have ascribed to him the authorship of the celebrated treatise Theurgia, or On the Egyptian Mysteries. However, the differences between this book and Iamblichus' other works in style and in some points of doctrine have led some to question whether Iamblichus was the actual author. Still, the treatise certainly originated from his school, and in its systematic attempt to give a speculative justification of the polytheistic cult practices of the day, it marks a turning-point in the history of thought where Iamblichus stood.

Iamblichus Page

Roman Emperor from 361 to 363 and a noted philosopher and Greek writer. A member of the Constantinian dynasty, Constantius II made him Caesar over the western provinces in 355, where he campaigned successfully against the Alamanni and Franks. Most notable was his crushing victory over the Alamanni in 357 at the Battle of Argentoratum despite being outnumbered. In 360 in Lutetia (Paris) he was acclaimed Augustus by his soldiers, sparking a civil war between Julian and Constantius. Before the two could face each other in battle, however, Constantius died, after naming Julian as his rightful successor. In 363, Julian embarked on an ambitious campaign against the Sassanid Empire. Though initially successful, Julian was mortally wounded in battle and died shortly thereafter. Julian was a man of unusually complex character: he was “the military commander, the theosophist, the social reformer, and the man of letters”. He was the last non-Christian ruler of the Roman Empire, and it was his desire to bring the Empire back to its ancient Roman values in order to save it from dissolution. He purged the top-heavy state bureaucracy and attempted to revive traditional Roman religious practices at the cost of Christianity. His rejection of Christianity in favour of Neoplatonic paganism caused him to be called Julian the Apostate (Ἀποστάτης or Παραβάτης “Transgressor”) by the church. He was the last emperor of the Constantinian dynasty, the empire's first Christian dynasty.

Julian the Apostate Page

Photius is widely regarded as the most powerful and influential Patriarch of Constantinople since John Chrysostom, and as the most important intellectual of his time, “the leading light of the ninth-century renaissance”. He was a central figure in both the conversion of the Slavs to Christianity and the Photian schism. The most important of the works of Photius is his renowned Bibliotheca or Myriobiblon, a collection of extracts and abridgements of 280 volumes of classical authors (usually cited as Codices), the originals of which are now to a great extent lost. The work is especially rich in extracts from historical writers. To Photius, we are indebted for almost all we possess of Ctesias, Memnon of Heraclea, Conon, the lost books of Diodorus Siculus, and the lost writings of Arrian. The Lexicon, published later than the Bibliotheca, was probably in the main the work of some of his pupils. It was intended as a book of reference to facilitate the reading of old classical and sacred authors, whose language and vocabulary were out of date. His most important theological work is the Amphilochia, a collection of some 300 questions and answers on difficult points in Scripture, addressed to Amphilochius, archbishop of Cyzicus. Other similar works are his treatise in four books against the Manichaeans and Paulicians, and his controversy with the Latins on the Procession of the Holy Spirit. Photius also addressed a long letter of theological advice to the newly-converted Boris I of Bulgaria. Numerous other Epistles also survive.

Photius Page

Major philosopher of the ancient world. In his philosophy there are the three principles: the One, the Intellect, and the Soul. His teacher was Ammonius Saccas and he is of the Platonic tradition. Historians of the 19th century invented the term Neoplatonism and applied it to him and his philosophy which was influential in Late Antiquity. Much of the biographical information about Plotinus comes from Porphyry's preface to his edition of Plotinus' Enneads. His metaphysical writings have inspired centuries of Pagan, Christian, Jewish, Islamic and Gnostic metaphysicians and mystics.

Plotinus Page

Neoplatonic philosopher who was born in Tyre. He edited and published the Enneads, the only collection of the work of his teacher Plotinus. He also wrote many works himself on a wide variety of topics. His Isagoge, or Introduction, is an introduction to logic and philosophy, and in Latin translation it was the standard textbook on logic throughout the Middle Ages. In addition, through several of his works, most notably Philosophy from Oracles and Against the Christians, he was involved in a controversy with a number of early Christians, and his commentary on Euclid's Elements was used as a source by Pappus of Alexandria.

Porphyry Page

Prominent late antique scholar from Palaestina Prima. Accompanying the Roman general Belisarius in the wars of the Emperor Justinian, he became the principal historian of the 6th century, writing the Wars of Justinian, the Buildings of Justinian and the celebrated Secret History. He is commonly held to be the last major historian of the ancient world.

Procopius Page

One of the last of the Neoplatonists. He was among the pagan philosophers persecuted by Justinian in the early 6th century, and was forced for a time to seek refuge in the Persian court, before being allowed back into the empire. He wrote extensively on the works of Aristotle. Although his writings are all commentaries on Aristotle and other authors, rather than original compositions, his intelligent and prodigious learning makes him the last great philosopher of pagan antiquity. His works have preserved much information about earlier philosophers which would have otherwise been lost.

Simplicius Page

Greek bishop of Ptolemais in the Libyan Pentapolis after 410, was born of wealthy parents, who claimed descent from Spartan kings, at Balagrae (Bayda now) near Cyrene between 370 and 375. While still a youth (393) he went with his brother Euoptius to Alexandria, where he became an enthusiastic Neoplatonist and disciple of Hypatia. In 410 Synesius, whose Christianity had until then been by no means very pronounced, was popularly chosen to be bishop of Ptolemais, and, after long hesitation on personal and doctrinal grounds, he ultimately accepted the office thus thrust upon him, being consecrated by Theophilus at Alexandria. One personal difficulty at least was obviated by his being allowed to retain his wife, to whom he was much attached; but as regarded orthodoxy he expressly stipulated for personal freedom to dissent on the questions of the soul's creation, a literal resurrection, and the final destruction of the world, while at the same time he agreed to make some concession to popular views in his public teaching. His tenure of the bishopric was troubled not only by domestic bereavements (his three sons died, the first two in 411 and the third in 413) but also by the barbarian invasions of the country (in repelling which he proved himself a capable military organizer) and by conflicts with the praeses Andronicus, whom he excommunicated for interfering with the Church's right of asylum. His many-sided activity, as shown especially in his letters, and his loosely mediating position between Neoplatonism and Christianity, make him a subject of fascinating interest. His scientific interests are attested by his letter to Hypatia, in which occurs the earliest known reference to a hydrometer, and by a work on alchemy in the form of a commentary on pseudo-Democritus.

Synesius of Cyrene Page

Byzantine historian, who lived in Constantinople during the reign of the Byzantine Emperor Anastasius I (491–518). According to Photius, he was a comes, and held the office of “advocate” of the imperial treasury. Zosimus' Historia Nova, “New History”, is written in Greek in six books. For the period from 238 to 270, he apparently uses Dexippus; for the period from 270 to 404, Eunapius; and after 407, Olympiodorus. His slavish dependence upon his sources is made clear by the change in tone and style between the Eunapian and Olympiodoran sections, and by the muddled gap left in between them. In the Eunapian section, for example, he is pessimistic, vague, and critical of Stilicho; in the Olympiodoran section, he offers precise figures and transliterations from the Latin, and favors Stilicho. The first book sketches briefly the history of the early Roman emperors from Augustus to Diocletian (305); the second, third and fourth deal more fully with the period from the accession of Constantius Chlorus and Galerius to the death of Theodosius I; the fifth and sixth, the most useful for historians, cover the period between 395 and 410, when Priscus Attalus was deposed; for this period, he is the most important surviving non-ecclesiastical source. The work, which breaks off abruptly in the summer of 410 at the beginning of the sixth book, is believed to have been written in 498–518.

Zosimus Page