The Refutation of All Heresies

The heresy of Valentinus is certainly, then, connected with the Pythagorean and Platonic theory. For Plato, in the Timaeus, altogether derives his impressions from Pythagoras, and therefore Timaeus himself is his Pythagorean stranger. Wherefore, it appears expedient that we should commence by reminding (the reader) of a few points of the Pythagorean and Platonic theory, and that (then we should proceed) to declare the opinions of Valentinus. For even although in the books previously finished by us with so much pains, are contained the opinions advanced by both Pythagoras and Plato, yet at all events I shall not be acting unreasonably, in now also calling to the recollection of the reader. by means of an epitome, the principal heads of the favourite tenets of these (speculators).

And this (recapitulation) will facilitate our knowledge of the doctrines of Valentinus, by means of a nearer comparison, and by similarity of composition (of the two systems). For (Pythagoras and Plato) derived these tenets originally from the Egyptians, and introduced their novel opinions among the Greeks. But (Valentinus took his opinions) from these, because, although he has suppressed the truth regarding his obligations to (the Greek philosophers), and in this way has endeavoured to construct a doctrine, (as it were,) peculiarly his own, yet, in point of fact, he has altered the doctrines of those (thinkers) in names only, and numbers, and has adopted a peculiar terminology (of his own).

Valentinus has formed his definitions by measures, in order that he may establish an Hellenic heresy, diversified no doubt, but unstable, and not connected with Christ.