Origen Bilingual Anthology: These things must happen to each of us mystically, You will find a divine perception & Let our whole life be a life of prayer (in English and Greek side by side)
Ἀνθολογία Ὠριγένη (στὸ πρωτότυπο, χωρὶς μετάφραση)
Origen Full Texts, in English: Against Celsus, On the Principles, Commentary on the Gospel of John, Commentary on the Gospel of Matthew, Letter to Gregory, On Prayer.
An Introduction to the Commentaries of Origen
Origen in Print
Origen on the Gift of Tongues, an essay by Charles Sullivan