For the more strenuous Muses say it is always simultaneously coming together and separating; but the gentler ones relaxed the strictness of the doctrine of perpetual strife; they say that the all is sometimes one and friendly, under the influence of Aphrodite, and sometimes many and at variance with itself by reason of some sort of strife. Now whether any of them spoke the truth in all this, or not, it is harsh and improper to impute to famous men of old such a great wrong as falsehood. But one assertion can be made without offence.
For this reason we must first inquire into the nature of speech and opinion and fancy, in order that when they are made clear we may perceive that they participate in not-being, and when we have perceived that, may prove the existence of falsehood, and after proving that, may imprison the sophist therein, if he can be held on that charge, and if not, may set him free and seek him in another class.