Evagrius exerted a striking impact on the development of spirituality, of Origenism, and of the spiritual interpretation of the Bible in Greek, Syriac, and Latin Christianity. This English translation of the most complete Syriac version of Kephalaia Gnostika makes Evagrius Ponticus's thoughts concerning reality, God, protology, eschatology, anthropology, and allegorical exegesis of Scripture widely available to scholars and students. Ramelli provides an integrated analysis of Evagrius's ascetic and philosophical writings. The volume includes an extensive introduction on the importance of Evagrius and the context of his thought, the text and English translation, commentary, and a bibliography.