§ 27.4. =Valentinian Gnosticism.=--=Valentinus=, the most profound, talented and imaginative of all the Gnostics, was educated in Alexandria, and went to Rome about A.D. 140, where, during a residence of more than twenty years, he presided over an influential school, and exercised also a powerful influence upon other systems. He drew the materials for his system partly from holy scripture, especially from the Gospel of John, partly from the esoteric doctrine of a pretended disciple of Paul, Theodades. Of his own voluminous writings, in the form of discourses, epistles and poems, only a few fragments are extant. The reporters of his teaching, Irenæus, Hippolytus, Tertullian, Epiphanius, differ greatly from one another in details, and leave us in doubt as to what really belongs to his own doctrine and what to its development by his disciples--The fundamental idea of his system rests on the notion that according to a law founded in the depths of the divine nature the æons by emanation come into being as pairs, male and female. The pairing of these æons in a holy marriage is called a Syzygy. With this is joined another characteristic notion, that in the historical development of the Pleroma the original types of the three great crises of the earthly history, Creation, the Fall, and Redemption, are met with. On the basis of this he develops the most magnificently poetic epic of a Christian mythological Theogony and Cosmogony. From the Βυθός or Αὐτοπάτωρ and its Ἔννοια or Σιγή, evolving his thought hitherto only in silent contemplation of his own perfection, emanates the first and highest pair of æons, the Νοῦς or Μονογενής who alone of all æons can bear to look into the depths of the perfection of the Father of all, and beside him his bride Ἀλήθεια. From them spring the Λόγος and Ζωή as the second pair, and from this pair again Ἄνθρωπος and Ἐκκλησία as the third pair. The Αὐτοπάτωρ and his Ennoia, with the first and highest pair of æons emanating for them, and these together with the second Tetras, form the Ogdoas. The Logos then begets a further removed circle of five pairs, the Decas, and finally the Anthropos begets the last series of six pairs, the Dodecas. Therewith the =Pleroma= attains a preliminary completion. A final boundary is fixed for it by the Ὅρος emanating from the Father of all, who, being alone raised above the operation of the law of the Syzygy, is endowed with a twofold ἐνεργεία, an ἐνεργεία διοριστική, by means of which he wards off all from without that would hurt, and an ἐνεργεία ἑδραστική, the symbol of which is the cross, with which he maintains inward harmony and order. How necessary this was is soon made apparent. For the Σοφία, the last and least member of the fourteen æon pairs, impelled by burning desire, tears herself away from her partner, and seeks to plunge into the Bythos in order to embrace the Father of All himself.