STRANGER: And that is the reason why their opponents cautiously defend themselves from above, out of an unseen world, mightily contending that true essence consists of certain intelligible and incorporeal ideas; the bodies of the materialists, which by them are maintained to be the very truth, they break up into little bits by their arguments, and affirm them to be, not essence, but generation and motion. Between the two armies, Theaetetus, there is always an endless conflict raging concerning these matters.
THEAETETUS: True.
STRANGER: Let us ask each party in turn, to give an account of that which they call essence.
THEAETETUS: How shall we get it out of them?
STRANGER: With those who make being to consist in ideas, there will be less difficulty, for they are civil people enough; but there will be very great difficulty, or rather an absolute impossibility, in getting an opinion out of those who drag everything down to matter. Shall I tell you what we must do?
THEAETETUS: What?
STRANGER: Let us, if we can, really improve them; but if this is not possible, let us imagine them to be better than they are, and more willing to answer in accordance with the rules of argument, and then their opinion will be more worth having; for that which better men acknowledge has more weight than that which is acknowledged by inferior men. Moreover we are no respecters of persons, but seekers after truth.
THEAETETUS: Very good.
STRANGER: Then now, on the supposition that they are improved, let us ask them to state their views, and do you interpret them.
THEAETETUS: Agreed.