Against the Sophists (3-4)

But these professors have gone so far in their lack of scruple that they attempt to persuade our young men that if they will only study under them they will know what to do in life and through this knowledge will become happy and prosperous. More than that, although they set themselves up as masters and dispensers of goods so precious, they are not ashamed of asking for them a price of three or four minae![*]

Why, if they were to sell any other commodity for so trifling a fraction of its worth they would not deny their folly; nevertheless, although they set so insignificant a price on the whole stock of virtue and happiness, they pretend to wisdom and assume the right to instruct the rest of the world. Furthermore, although they say that they do not want money and speak contemptuously of wealth as “filthy lucre,” they hold their hands out for a trifling gain and promise to make their disciples all but immortal![*]