 His library in Caesarea was inherited by his admirer Pamphilus, then by Eusebius as a disciple of Pamphilus and bishop of that city. It also fell to Eusebius to finish the Apology which Pamphilus had begun to write against Origen’s first detractors. From this work and the philippics of such enemies of Origen as Jerome, Theophilus of Alexandria, Epiphanius of Salamis, and the Emperor Justinian, we can cull fragments of writings that have otherwise perished (see further Clark 1992). We also possess an anthology of choice excerpts from his writings the Philokalia (McLynn 2004), and two short texts On Prayer and To the Martyrs. Much had already been lost by attrition in the time of Eusebius (died c. 339); more may have perished after Origen was anathematized in or around the year 553. Many of Origen’s Commentaries and Homilies, like the First Principles, survive only in the Latin of Rufinus, who translated him in the fourth century with reverence but not always with fidelity (see further Pace 1990). The following synopsis of Origen’s thought is based primarily on the extant corpus in Greek and Latin, making use of polemical matter only with the caution that is now enjoined by the most learned scholars.