George Karamanolis from the Stanford Encyclopedia of Philosophy noted, "The remains of Numenius' work leave no doubt that he relied primarily on texts of Plato in constructing his own system of principles. Ancient testimonies are, however, divided between those that classify him as a Platonist philosopher (Porphyry, Life of Plot. 14.12, Eusebius, Prep. Ev. XI.21.7) and those that consider him a Pythagorean (Origen, Against Celsus I.15, VI.51, V.38 frs. 1b–1c, 53, Porphyry, Ad Gaurum 34.20–35.2; fr. 36, Calcidius, In Timaeum 297.8 Waszink; fr. 52.2). We should not see any contradiction or even tension in this double classification. Numenius is a Pythagorean Platonist like Moderatus half a century earlier or Eudorus of Alexandria around the turn of the millennium. That is, Numenius accepted both Pythagoras and Plato as the two authorities one should follow in philosophy, but he regarded Plato's authority as subordinate to that of Pythagoras, whom he considered to be the source of all true philosophy—including Plato's own. For Numenius it is just that Plato wrote so many philosophical works, whereas Pythagoras' views were originally passed on only orally (cf. fr. 24.57-60)."