Instead of besmirching the reputation of divine men,[316] the (Gnostics) should interpret the doctrines of the ancient sages in a friendly way, borrowing from them such as they are right in professing, as, for instance, the immortality of the soul, the existence of the intelligible world, and of the first Divinity (who is the Good), the necessity for the soul to flee from intercourse with the body, and the belief that separation of the soul from body is equivalent to a return from generation to "being."[317] They do well indeed if they borrow these ideas from Plato, for the purpose of developing them. They are even at liberty to express any opinion they please in diverging from his views; but their own doctrine should not be established in the minds of their followers by insults and sarcasms against Greek sages. They could only do so by demonstrating the propriety of their distinctive tenets, whenever they differ from those of the ancient philosophers, and by expounding their own tenets with a really philosophic reserve and equanimity. Even when they controvert a system they are still bound to consider nothing but the truth, without any attempt at self-glorification, either by attacking men whose teachings have long since been approved by worthy philosophers, or by claims of superiority to the latter. For that which the ancients taught on the subject of the intelligible world will always be considered as the best and wisest by all who do not permit themselves to be misled by the errors that to-day mislead so many.[318] GNOSTIC ADDITIONS TO PLATONISM ARE THEIR POOREST DOCTRINES. If from the doctrines of the (Gnostics) we remove what they have borrowed from the teachings of the ancients, their remaining additions will be discovered as very unfortunate. Their polemic against (Greek philosophy) consists of an introduction of a great number of genealogies,[319] and destructions, blaming the intercourse of the soul with the body,[320] complaining of the universe, criticising its administration, identifying the demiurgic creator (that is, Intelligence) with the universal souls.[321] THE UNIVERSAL SOUL MAY NOT BE JUDGED BY THE HUMAN STANDARD. 7. Elsewhere we have demonstrated[322] that this world never began, and will never end; and that it must last as long as the intelligible entities. We have also shown,[323] and that earlier than these (Gnostics), that the soul's intercourse with the body is not advantageous to her. But to judge the universal Soul according to ours is to resemble a man who would blame the totality of a well governed city by an examination limited to the workers in earth or metal. DIFFERENCES BETWEEN THE UNIVERSAL SOUL AND THE HUMAN SOUL.