Abstract
Neither of the two existing critical editions of the Apologeticum de tribus capitulis succeeds in identifying a literal citation which its author, Julian of Toledo attributes to Athanasius of Alexandria and which is not found in either of the works, authentic or attributed, of the patriarch of Alexandria. After an analysis of the sources which Julian may have utilized in his polemic with the Roman see, we find the citation in the Contra Arianos, Sabellianos et Photinianos dialogus of Virgil of Tapso in a fictitious conversation that this African author of the fifth century establishes between Arius and Athanasius