On First Principles
De Principiis stands as the first systematic Christian theology, written by Origen of Alexandria between 220 and 230 CE. Emerging from the intellectual ferment of third-century Alexandria, this treatise responds to the urgent need for a comprehensive Christian worldview that could engage sophisticated Greek philosophical culture while remaining faithful to apostolic teaching. Origen wrote for educated Christians who faced challenges from Gnostic teachers, pagan philosophers, and internal doctrinal disputes that threatened to fragment the young church.
The work unfolds as a systematic exploration of Christian doctrine organized around fundamental principles. Origen begins with God the Father as the ultimate source of all reality, proceeds through the nature of Christ and the Holy Spirit, then examines rational creatures including angels, human souls, and demons. His treatment of the soul's pre-existence and eventual restoration of all things to God proved particularly influential and controversial. Throughout, he employs allegorical interpretation of Scripture alongside philosophical reasoning, arguing that the material world serves as a temporary stage for spiritual education. His vision encompasses multiple worlds and ages, with souls progressing through various states of embodiment toward ultimate union with the divine. The treatise concludes with detailed discussions of free will, the resurrection of the body, and the final restoration of all creation.
De Principiis shaped Christian theology for centuries, providing conceptual frameworks that influenced the Cappadocian Fathers and later Eastern theology, while also generating controversies that led to Origen's eventual condemnation. Its bold synthesis of Christian revelation and Platonic philosophy established patterns of theological speculation that persist in both Eastern Orthodoxy and Western thought.
Who should read this: Serious students of early Christian thought and systematic theology who can engage with speculative theological reasoning will find this essential, but those seeking devotional reading or practical spiritual guidance should look elsewhere.
Editions
External off-site sources
Free downloads
- OTHER De Principiis (Project Gutenberg) PDTrans. Frederick Crombie · 1869Frederick Crombie's Victorian translation of the four books, with Rufinus's prefaces, as Project Gutenberg's clean reflowable text. The easiest free English version to read on a phone or e-reader.
- OTHER De Principiis (CCEL) PDTrans. Frederick Crombie · 1885The same Crombie translation in CCEL's reading room, within Ante-Nicene Fathers volume 4, followed there by Origen's letters and carrying the series' footnotes.
- OTHER De Principiis (Wikisource) PDTrans. Frederick Crombie · 1885Crombie's translation proofread on Wikisource, a chapter to a page.
- OTHER De Principiis (New Advent) PDTrans. Frederick Crombie · 1885New Advent's index to the four books in the Ante-Nicene Fathers translation, each on its own plain web page.
- PDF De Principiis (Internet Archive (GCS)) PD Greek / Latin (Rufinus)Trans. Paul Koetschau (ed.) · 1913Koetschau's critical edition (1913), printing Rufinus's Latin with the surviving Greek beneath it — volume 5 of the Berlin Academy's Origen, and the text scholarship still cites.
- PDF De Principiis (Internet Archive (Lommatzsch)) PD Greek / LatinTrans. C. H. E. Lommatzsch (ed.) · 1847The four books in Lommatzsch's collected Origen (Berlin, 1847), Latin with the Greek fragments — the nineteenth-century edition that preceded the Berlin Academy text.