Valentinus' Detractors
Shortly after Valentinus' death, Irenaeus began his massive work On the Detection and Overthrow of the So-Called Gnosis, better known as Adversus Haereses with a highly-colored and negative view of Valentinus and his teachings that occupies most of his first book. A modern student, M. T. Riley, observes that Tertullian's Adversus Valentinianos retranslated some passages from Irenaeus, without adding original material Later, Epiphanius of Salamis discussed and dismissed him (Haer., XXXI). As with all the non-traditional early Christian writers, Valentinus has been known largely through quotations in the works of his detractors, though an Alexandrian follower also preserved some fragmentary sections as extended quotes. A Valentinian teacher Ptolemy refers to "apostolic tradition which we too have received by succession" in his Letter to Flora. Ptolemy is known only for this letter to a wealthy gnostic lady named Flora, a letter itself only known by its full inclusion in Epiphanius' Panarion; it relates the gnostic view of the Law of Moses, and the situation of the Demiurge relative to this law. The possibility should not be ignored that the letter was composed by Epiphanius, in the manner of composed speeches that ancient historians put into the mouths of their protagonists, as a succinct way to sum up.
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