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[1019]) 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,[1020] 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