Antidosis

and living, furthermore, day by day in the greatest simplicity and decorum, taking their pleasures in discourse—not the kind of discourse which is employed in petty litigation nor that which is offensive to anyone, but the kind which has the approbation of all men. Nevertheless, although they know all this about them, they do not refrain from traducing them and saying that they engage in this training in order that they may defeat the ends of justice in the courts and win their own advantage.

And yet who that engages in the practice of injustice and of evildoing would be willing to live more continently than the rest? Whom have these traducers ever seen reserving and treasuring up their depravities for future use instead of indulging from the first the evil instincts present in their nature?

But, apart from these considerations, if it be true that cleverness in speech results in plotting against other people's property, we should expect all able speakers to be intriguers and sycophants; for the same cause produces in every instance the same effect.