(1) We shall, therefore, deliver to you the peculiar dogmas of the Assyrians; and also clearly develop to you our own opinions; collecting some things from the infinite writings of the ancients, but others from those particulars which were comprehended by the ancients in one treatise, and pertain to the whole knowledge of divine natures. If also you should propose any philosophic inquiry, we shall discuss it for you, according to the ancient pillars of Hermes, which Plato and Pythagoras knew before, and from thence constituted their philosophy. But such things as exhibit foreign inquiries, or which are contradictory and contentious, we shall assist mildly and aptly, or we shall demonstrate their absurdity. Such, likewise, as proceed conformably to common conceptions, we shall endeavour to discuss in a way perfectly known and clear. And things, indeed, which require the experience of divine operations to an accurate knowledge of them, we shall explain, as far as this is possible to be effected by words alone; but such as are full of intellectual theory, we shall develop with a view to the purification of the soul.

(13) But we shall give a detailed answer to these people when we discuss the doctrine of First Principles. The philosophers whom we have mentioned, from whom the Marcionites blasphemously derived their doctrine that birth is evil, on which they then plumed themselves as if it were their own idea, do not hold that it is evil by nature, but only for the soul which has perceived the truth. For they think the soul is divine and has come down here to this world as a place of punishment. In their view souls which have become embodied need to be purified. But this doctrine is not that of the Marcionites, but of those who believe that the souls are enclosed in bodies and change from this prison and undergo transmigration. There will be an opportunity to reply to these when we come to speak about the soul.

(9) And as in the Barbarian philosophy, so also in the Hellenic, "tares were sown" by the proper husbandman of the tares; whence also heresies grew up among us along with the productive wheat; and those who in the Hellenic philosophy preach the impiety and voluptuousness of Epicurus, and whatever other tenets are disseminated contrary to right reason, exist among the Greeks as spurious fruits of the divinely bestowed husbandry. This voluptuous and selfish philosophy the apostle calls "the wisdom of this world;" in consequence of its teaching the things of this world and about it alone, and its consequent subjection, as far as respects ascendancy, to those who rule here. Wherefore also this fragmentary philosophy is very elementary, while truly perfect science deals with intellectual objects, which are beyond the sphere of the world, and with the objects still more spiritual than those which "eye saw not, and ear heard not, nor did it enter into the heart of men," till the Teacher told the account of them to us; unveiling the holy of holies; and in ascending order, things still holier than these, to those who are truly and not spuriously heirs of the Lord's adoption. For we now dare aver (for here is the faith that is characterized by knowledge) that such an one knows all things, and comprehends all things in the exercise of sure apprehension, respecting matters difficult for us, and really pertaining to the true gnosis such as were James, Peter, John, Paul, and the rest of the apostles. For prophecy is full of knowledge (gnosis), inasmuch as it was given by the Lord, and again explained by the Lord to the apostles. And is not knowledge (gnosis) an attribute of the rational soul, which trains itself for this, that by knowledge it may become entitled to immortality? For both are powers of the soul both knowledge and impulse. And impulse is found to be a movement after an assent. For he who has an impulse towards an action, first receives the knowledge of the action, and secondly the impulse. Let us further devote our attention to this. For since learning is older than action; (for naturally, he who does what he wishes to do learns it first; and knowledge comes from learning, and impulse follows knowledge; after which comes action;) knowledge turns out the beginning and author of all rational action. So that rightly the peculiar nature of the rational soul is characterized by this alone; for in reality impulse, like knowledge, is excited by existing objects. And knowledge (gnosis) is essentially a contemplation of existences on the part of the soul, either of a certain thing or of certain things, and when perfected, of all together. Although some say that the wise man is persuaded that there are some things incomprehensible, in such wise as to have respecting them a kind of comprehension, inasmuch as he comprehends that things incomprehensible are incomprehensible; which is common, and pertains to those who are capable of perceiving little. For such a man affirms that there are some things incomprehensible.

(29) They derived their doctrines from an apocryphal work. I will quote the text which is the mother of their licentiousness. And whether they themselves, I mean the authors of the book, bare responsible (see their madness, for by their licence they do grievous wrong to God) or whether they derived their ideas from some others whom they fell in with, they have taken a sound doctrine and perversely misapplied it. The passage reads as follows: "All things were one; but as it seemed good to its f unity not to be alone, an idea came forth from it, and it had intercourse with it and made the beloved. In consequence of this there came forth from him an idea with which he had intercourse and made powers which cannot be seen or heard..."; down to the words "each by her own name." If these people spoke of acts of spiritual union like the Valentinians, perhaps one could accept their view. But to suppose that the holy prophets spoke of carnal and wanton intercourse is the way of a man who has renounced salvation.

(4) For some they have borrowed, and others they have misunderstood. And in the case of others, what they have spoken, in consequence of being moved, they have not yet perfectly worked out; and others by human conjecture and reasoning, in which also they stumble. And they think that they have hit the truth perfectly; but as we understand them, only partially. They know, then, nothing more than this world. And it is just like geometry, which treats of measures and magnitudes and forms, by delineation on plane-surfaces; and just as painting appears to take in the whole field of view in the scenes represented. But it gives a false description of the view, according to the rules of the art, employing the signs that result from the incidents of the lines of vision. By this means, the higher and lower points in the view, and those between, are preserved; and some objects seem to appear in the foreground, and others in the background, and others to appear in some other way, on the smooth and level surface. So also the philosophers copy the truth, after the manner of painting. And always in the case of each one of them, their self-love is the cause of all their mistakes.