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The Syriac treatise published in the present volume is in many respects a unique text. Though it has been preserved anonymously, there remains little doubt that it belongs to Porphyry of Tyre. Accordingly, it enlarges our knowledge of the views of the most famous disciple of Plotinus. The text is an important witness to Platonist discussions on First Principles and on Plato's concept of Prime Matter in the Timaeus. It contains extensive quotations from Atticus, Severus, and Boethus. This text thus provides us with new textual witnesses to these philosophers, whose legacy remains very poorly attested and little known. Additionally, the treatise is a rare example of a Platonist work preserved in the Syriac language. The Syriac reception of Plato and Platonic teachings has left rather sparse textual traces, and the question of what precisely Syriac Christians knew about Plato and his philosophy remains a debated issue. The treatise provides evidence for the close acquaintance of Syriac scholars with Platonic cosmology and with philosophical commentaries on Plato's Timaeus.

Concerning embryos, Porphyry takes an original view on issues that had been left undecided by his teacher Plotinus and earlier by the doctor Galen. What role is played in the development of the embryo by the souls or the natures of the father, of the mother, of the embryo, or of the whole world? Porphyry's detailed answer, in contrast to Aristotle's, gives a significant role to the soul and to the nature of the mother, without, however, abandoning Aristotle's view that the mother supplies no seed. In the fragments of On What is in Our Power, "Porphyry" discusses Plato's idea that we choose each of our incarnations, and so are responsible for what happens in our lives. This volume contains an English translation of the two commentaries, as well as extensive notes, an introduction and a bibliography.

Throughout its first three centuries, the growing Christian religion was subjected not only to official persecution but to the attacks of pagan intellectuals, who looked upon the new sect as a band of fanatics bent on worldwide domination even as they professed to despise the things of this world. Prominent among these pagan critics was Porphyry of Tyre (ca. 232-ca. 305 C.E.), scholar, philosopher, and student of religions. His book Against the Christians (Kata Christianon), was condemned to be burned by the imperial Church in 448. It survives only in fragments preserved by the cleric and teacher Macarius Magnes.
This new translation of the remains of Against the Christians, by renowned biblical scholar R. Joseph Hoffmann, reveals a work of deft historical and literary criticism. Porphyry's trenchant comments extend to key figures, beliefs, and doctrines of Christianity as he roundly attacks the divinity of Jesus, the integrity of the apostles, the Christian concept of God, and the Resurrection. Porphyry dismisses the gospels as the work of charlatans and Jesus himself as a criminal and failure. In short, the gospels, as a collective account of the life and deeds of Jesus, are hardly worth the reverence with which an increasing number of Christian converts of Porphyry's own day have begun treating them.
Critical notes by the translator provide a running commentary to the text. A lively introduction and comprehensive epilogue describe the "buildup" to the pagan critique of Christianity, and help put Porphyry's work in historical perspective.
Accessible to the general reader, and a valuable scholarly tool as well, this new translation of Against the Christians proves a worthy addition to both classical and patristic studies.

Porphyry's On Abstinence from Killing Animals is one of the most interesting books from Greek antiquity for both philosophers and historians. In it, Porphyry relates the arguments for eating or sacrificing animals and then goes on to argue that an understanding of humans and gods shows such sacrifice to be inappropriate, that an understanding of animals shows it to be unjust, and that a knowledge of non-Greeks shows it to be unnecessary. There are no Neoplatonist commentaries on Aristotle's Ethics from the period AD 250-600. Thus, although this work is not a commentary on Aristotle, it fills a gap in this series by going to the heart of ethical debates among Neoplatonists around AD 300, and revealing one ascetic Neoplatonist's view of the ideal way of life. It also records rival positions taken on the treatment of animals by Greek philosophers over the previous six hundred years.